I've been to over 200 concerts, so I wont name them all:

Bright Eyes (2X)
Cursive (5X)
Animal Collective
Tool
Radiohead (3x)
Massive Attack
TV on the Radio
Modest Mouse (5x)
Chic Corea
Fantomas
Peeping Tom
Beck (2x)
The Faint
The Pixies (3x)
Frank Black and the Catholics
NIN
Bauhaus
Weezer
Wilco
Tilly and the Wall
Now it's Overhead
Billy Corgan
the Mars Volta (2x)
Minus the Bear (2x)
the Violent Femmes (6x)
Damien Marley
Pinback
Cake
Arcade Fire
Death Cab for Cutie
I'll stop now.