Ideas for ukulele covers

Hello ukulele underground members! We are a ukulele trio from northern virginia. We have plenty of original songs, but want ideas for covers. We have a couple, but just thought it wouldn't hurt to get some input. We recently covered 'Chop Suey' by System of a Down. Here is a link to give you an idea of what we are going for:

http://www.youtube.com/watch?v=8Ml6RaLj4-0&feature=channel

We consider ourselves tragical-comical-historical-pastoral-ukulele folk rock, if that helps. We aren't the typical Hawaiian sounding ukulele players, but we would greatly appreciate suggestions!

To view our original songs visit:
http://www.reverbnation.com/thehumansva or
http://www.myspace.com/thehumansva

Hmm, One that sticks out for me in terms of dead-pan humour and sometimes comical genius would be songs by Bill Callahan (Smog), there's a lot to choose from. Not sure how you would work it with a trio but he does have some fast/up-beat songs, especially on his "Woke on a Whaleheart" album. Other than that I'm at a loss.