The only one I'm keen to is Screamin' Jay Hawkins' cover of "Whistlin' Past the Graveyard", which can be found on Itunes on the "New Coat of Paint: Tom Waits covers" comp. (I like Lydia Lunch, but just not that cover, ehhh).
Other than that I got pretty excited to hear Queens of the Stoneage did a cover of "Going Out West", can't say it's superb but I love Queens and like Homme's impression at the beginning. listen to it: here
And everyone knows Scarlett Johansens' cover cd is just absolute shit.
So what other covers should I check out?!