Because a Top 10 isn't enough.
I don't think I agree with the taste of most here, so I thought I might as well test it.
1. Radiohead
2. The Beatles
3. Muse
4. Arctic Monkeys
5. Gorillaz
6. Eels
7. The Strokes
8. Arcade Fire
9. The Flaming Lips
10. Queens Of The Stone Age/Them Crooked Vultures
11. The Libertines
Honourable mentions:
Crystal Castles, Foals, Joy Division, Belle And Sebastian, Bloc Party, Led Zeppelin, Modest Mouse, Animal Collective, Death From Above 1979, Laura Marling, Editors, Eminem, Lou Reed/The Velvet Underground, The Smiths, Bob Dylan, Grizzly Bear, MGMT, Jeff Buckley, Pixies, Blur, Rage Against The Machine, The White Stripes, Biffy Clyro, David Bowie, LCD Soundsystem, The Clash, Flight Of The Conchords, The Jimi Hendrix Experience, The Killers, Kings Of Leon, The Maccabees, Pink Floyd, The Ramones, The Rolling Stones, Sex Pistols, Stereophonics, Manic Street Preachers and more...