Last night, the Arcade Fire summoned Thor and brought great thunder upon Letterman's studio audience with a rousing version of Rebellion (Lies). Here is a large video (avi) file and the mp3 to stir your blood.
Yes, I still heart the Arcade Fire. Even more than David Bowie does.
Arcade Fire - Rebellion (Lies), Live on Letterman 9-15-05: audio (mp3), video (avi)