Eh my music taste are quite diverse, I guess:
let me take the top 10 bands I listened to in total since I dled last.fm
1 Radiohead (especially kid A and amnesiac albums)
2 daft punk (rollin' and scratching, burning, rock an' roll and their alive 2007 album are my fav)
3 beirut (oh so beautifull music, rather unknown yet so here are some links and info
http://en.wikipedia.org/wiki/Beirut_(band) Live, Beirut's shifting roster generally consists of Condon accompanied by Perrin Cloutier (cello/accordion), Jason Poranski (guitar/mandolin/ukulele), Nick Petree (drums), Kristin Ferebee (violin), Paul Collins (organ/keys/tambourine/ukulele), Jon Natchez (baritone sax/mandolin/glockenspiel), and Kelly Pratt (trumpet/euphonium).)
4 M.I.A. Sri Lankan (father Tamil tiger)/ British electronic/rap/world music. (it's hard to describe her music actually, i guess

)
5 digitalism: Deutsches Elektronischer Musik hergestellt in dem Bunker aus Dresden.
6 Kroke: Polish Klezmer band, very nice with a wine.
7: Marc Moulin: Belgian new Jazz pioneer.
8: Duke Ellington: it ain't mean a thing if you ain't got that swing..
9: Nid & Sancy: local electrotrash
10: gorillaz, just great music overall.
honourable members (who don't rank high since I got them rather recently or underplayed: Mogwai, common, Atari teenage riot, Boards of canada, Miles davis, Blonde redhead, Beasty boys, Sun Ra, Kavinsky and Aphex twin)