best artists in the last 15 years

Red Hot Chili Peppers

(I'm going to get it for this comment, but I like their new stuff better.. Californication & Stadium Arcadium)

Beck

Beck kicks ass, definitely innovative. Especially Odelay and Sea Changes:

http://youtube.com/watch?v=S8ZvmwQ3Gd0&feature=related

http://www.youtube.com/watch?v=-l3_gwIOTGI

Amy Winehouse

Cat Power

http://www.youtube.com/watch?v=MVGgGW1ZalY

cat power, cross bones style

Galactic

Greyboy Allstars

Radiohead

Nirvana

Firehose

RL Burnside

Guru Jazzmatazz

Beastie Boys

and of course... METALLICA..

I'll have to check out Wilco and Ryan Adams.