The Foo Fighters are in the midst of a weeklong residency on The Late Show With David Letterman. On Wednesday, they were joined by 'swamp rocker' Tony Joe White to perform his 1969 hit 'Polk Salad Annie'.

The Foos kicked off the week covering Black Sabbath's 'War Pigs' with Zac Brown. Then, they were joined by the Wilson sisters, of Heart, to rock out their hit 'Kick It Out' on Tuesday.

In an effort to promote their upcoming HBO rockumentary, Sonic Highways, the Foo Fighters will be on Letterman all week.

If you didn't get your fill of the Foo Fighters, following a week on Letterman and the premiere of Sonic Highways, then you'll want to check out what else HBO has in store. This Friday, immediately following the 11pm premiere of Foo Fighters 'Sonic Highways', the HBO Facebook page will stream the premiere party concert, live from The Cubby Bear in Chicago.

Watch the Foo Fighters Fight Foo for You on Letterman