My only claim to musicality is the eight years I spent playing the flute, so these reviews are written on thin ground indeed.  I've included links to CDNow so you can see what other people think.

My Current Favorite Albums:

Afro Celt Sound System, Volume 1 Sound Magic
This is just a really interesting album.  The basic idea is take some celtic instruments and melodies and blend them with modern techno.  Something for everyone.  Like I said, I'm not a real fan of pure techno, but I like the way they mixed electronic influences with traditional celtic stuff.  It's an expensive album, and it took me a while to hunt it down, but it's worth it.
 
The Cardigans, Gran Turismo
Overall, I'd give this album a 6.  But out of the 11 tracks, there are four that really got under my skin.  So I just program my player to play those four over and over again and I don't listen to the others.  :-P  If you want to get this album, listen to it first and see if you can get it at a used CD store.
• Erase/Rewind - I don't know what it is about this song, but I find it running through my mind at the oddest times.  Maybe it's the rhythm or something.  It's spiffy in my book.
• Starter - The idea of a fresh start is what makes this song appealing.  Someone starting with a clean slate after they've made a mess of things.  I guess it's one of those things that looks great in the movies, but would be near impossible in real life.
• My Favourite Game - I bought the CD for this song.  It's a really cool song.  All of the other songs could have sucked mooshy bananas and I still would have bought the CD for this song.  I like it that much.
• Do You Believe - I suppose this is close to my own attitude . . .  Do you really think/ that love is gonna save the world/ well, I don't think so/ I just don't think so/ do you really think/ that love is gonna save your soul/ well, I sure hope so/ I really really hope so/ but I don't think so . . .

Tori Amos
I've got two of Tori's albums so far: Boys for Pele and her latest, From the Choirgirl Hotel.  I've also got a sample CD called Hey Jupiter with an awesome rendition of the title song.  Tori's music always disturbs me somewhat.  Sometimes I think her songs come from the brink of madness - maybe that's why they're so fascinating.  I'd strongly reccomend her recent album, From the Choirgirl Hotel, even though I really only like about half the songs on it.  But the songs I like are definately worth the price of the CD.  Go buy it and listen to it when you're driving alone at night.
Favorite songs:
• Blood Roses, Boys for Pele - Blood roses/ blood roses/ back on the street now/ now you've cut the flute/ from the throat of the loon/ at least when you cry now/ he can't even hear you/ when chickens get a taste of your meat/ when he sucks you deep/ sometimes you're nothing but meat
• Caught a Lite Sneeze, Boys for Pele - There was a neat-o video for this song.  I love the complex rhythms.
• Cruel, From the Choirgirl Hotel - You've got to listen to this song - the rhythm echoes dark and deep, wound with thorny guitar and voice.  I can be cruel/ I don't know why/ why can't my ba.ll.oo.n stay up in a perfectly windy sky
• Doughnut Song, Boys for Pele
• i i e e e, From the Choirgirl Hotel - Another rhythm that'll get into your bones.
• In the Springtime of His Voodoo, Boys for Pele
• Hey Jupiter, Hey Jupiter - Check this version out if you can.  The addition of a low, pulsing beat updates the piano version on Boys for Pele.
• Liquid Diamonds, From the Choirgirl Hotel - I just like listening to her sing the words 'liquid diamonds'.
• Little Amsterdam, Boys for Pele - I wish I knew the story behind this song.  Did she shoot her mother?  Did the sheriff?
• Northern Lad, From the Choirgirl Hotel - Sad song about the end of a romance.
• Playboy Mommy, From the Choirgirl Hotel - Guess this is one of the few pseudo country songs I like.  Sad, though, about a mother at her daughter's grave.
• Spark, From the Choirgirl Hotel - This one's been on the radio and has a video.  Another good driving at night song.
Celtophile, The Voice of Celtic Women: There was a Lady
The Celtophile collection is a bunch of lower priced CDs with different celtic themes - you can probably find them in the world/international section of your CD store.  I think I got this one for eight or nine bucks.  It's a fairly good collection of celtic songs by a variety of artists, but the first song on the album is what makes it a keeper.  I should probably just buy the CD by Deanta.
• Willie Taylor, Deanta - Best song on the album!  It's about a woman whose fiance goes to sea, so she dresses up like a sailor and searches for him.  She finds out from her captain that her love's name isn't Willie Taylor, it's Fitzgerald, and he's married.  So she gets up early in the morning and sees him walking with his lady, and she draws her pistols and shoots him dead (you can hear him moan and fall to the ground if you listen hard enough).  It's awesome.  :-)
Dead Can Dance
I've heard DCD's music described as gothic.  I'm not sure if it's an accurate description, but if you need to place it in a catagory I suppose it works.  DCD weave many different influences in their music, from rock to Medditeranean to electronica, medieval and jungle rhythms, to Native American and Spanish.  I've got most of their albums: Dead Can Dance, Aion (the medieval one), A Passage in Time (medieval and other influences), Spiritchaser (Native American and Spanish), Toward the Within (taped in concert), and Into the Labyrinth.
Favorite album:
Spiritchaser - I love all the songs on this album.  :-)  It's unique - the old and new blended together to form a rich tapestry of sound.  The infectious rhythms don't hurt a bit either.
Favorite songs:
• The Arrival and the Reunion, Aion - Medieval sounding, all voice.
• As the Bell Rings the Maypole Spins, Aion - Starts out medievalish, but adds modern influences.
• Bird, A Passage in Time - Tribal rhythms and voice mix with a background of birdcalls.
• Cantara, A Passage in Time and Toward the Within - Neat song - starts out slow, then adds a middle eastern beat halfway through with wild voice.
• Desert Song, Towards the Within
• The Fatal Impact, Dead Can Dance
• Frontier, Dead Can Dance
• I Am Stretched on Your Grave, Towards the Within - Creepy!  When my family thinks that I am safe in my bed/ from night until morning I am stretched at your head/ coming out to the end with tears both hard and wild/ all my grief for the girl that I loved as a child/ the priests and the friars behold me in dread/ because I still love you, my love, and you're dead/ and would still be your shelter/ from rain and from storm/ but with you in the cold grave/ I cannot sleep or mourn
• Indus, Spiritchaser - Native American voice and rhythm with guitar.  Hypnotic.
• Neirika, Spiritchaser - Techno meets tribal with beautiful voice melodies.
• Piece for Solo Flute, Towards the Within - Haunting and beautiful.
• Radharc, Aion - Cool middle eastern rhythms and medieval voice.
• Rakim, Towards the Within - Indian influences color both rhythm and voice.
• The Snake and the Moon, Spiritchaser - If this song doesn't get you moving, nothing will.  I can almost see the snake sauntering over the sand beneath a full desert moon.
• Song of the Dispossessed, Spiritchaser - Sad lyrics tell the story of a death of a culture.  Spanish guitar, piano and synthesizer with a latin beat.
• Song of the Nile, Spiritchaser - Dreamlike and hypnotic.
• Song of the Stars, Spiritchaser - Techno background with Native American rhythms and voice and poetry spoken throughout.
• Spirit, A Passage in Time
• Wilderness, Aion and A Passage in Time - Medieval voice.
• The Wind That Shakes the Barley, Towards the Within - Solo voice - very powerful.
• The Writing on My Father's Hand, A Passage in Time - Bells and voice with medieval influences.
• Yulunga, Towards the Within - Starts out slow, with voice, but picks up halfway through the song.
Enya
You've probably heard Enya's music even if you think you haven't.  From her catchy hit Orinoco Flow (Sail Away) to her introspective melodies, Enya is a new age musical wonder.  I love listening to her music to relax or to play while I'm drawing or writing.  She has released 5 albums, Watermark, The Celts, Shepherd Moons, The Memory of Trees, and Paint the Sky with Stars.  I'm particuarly fond of The Memory of Trees and Paint the Sky with Stars.  If you don't have any of her CDs, I'd reccommend getting Paint the Sky with Stars - it's a compilation CD of some of her best songs from all four of her albums, plus some new songs.
Garbage

Le Mystere Des Voix Bulgares

Loreena McKennitt

Narada Collection Series, Celtic Voices: Women of Song

Kate Price

Sara McLachlan

St. George's Canzona, A Medieval Banquet

VAST, Video Auditory Sensory Theater

The theme of this album seemed to be religion and love (sex).  Kind of an odd paring, but it works surprisingly well.  All of the songs are infectious, with a unique flavor and texture.  I'd describe the music as almost gothic rock, with techno influences and unusual samplings.  Very dark undertones.  :-)
• Here:  This is great if you're in a bit of a bitchy mood.  It starts out slow and quiet, with strings, but builds to a heavy rolling rhythm of guitars and precussion.  The lyrics speak of disenchantment and frustration with reality, a person seeking something.  Where do I put the books/ there's so many I could read/ but they all are filled with lies/ where do I put the lies /there's so many I could say/ but it seems they're in the books . . .
• I'm Dying:  The opening loop of chanting monks will give away the religous theme to this song.  It's evocative of a person seeking God - wanting to believe - a common feeling in this society, I think.  Don't skip over this one just because it mentions Jesus - the monks mix very well with a pulsing rock beat.  Jesus Christ/ are you the son of god/ I want to know/ you ask that I believe/ not one day goes by that I don't compromise/ your love for the cold love of the world/ it's killing me through my own evil pride
• Temptation:  My favorite song on the album.  :-)  Almost middle eastern sounding, fast paced, with another sampling by Le Mystere des Voix Bulgares.  I went in the desert I went searching for the truth/ I stumbled across you and I know you're not the truth . . . They've been killing children and nobody seems to care/ they've been laughing at my god/ my god, I wouldn't dare . . .
• The Niles Edge:  I love the dreamlike qualities of this song - guitar, chimes, and monk's chant cycle effortlessly, creating an eerie backdrop that seems to hold an echo of times long ago.  The lyrics seem like a metaphore for something - a puzzle.  There's a story behind this song.
• You:  A sad sounding, slow ballad.  I try to make out the story behind the lyrics every time I listen to it.  My best guess is that it's about a guy at his love's funeral, saying goodbye.  You can't take anything with you/except the love/ the love I have for you . . .