You could try mixing in a lot of stuff for a kind of medley. For example, you could take samples from Racer-X 'B.R.O.' and weave it in with something like the intro to 'leaving song part II' by AFI. For those (probably all) of you who are unfamiliar with or don't like AFI, the intro to that song is a beautiful combination of tapping and sliding together ( like b-t15/19p15p12). It's not anything revolutionary, but it has an incredible effect. You can actually watch the guitarist's hands as he plays it in the music video at yahoo (launch), I highly recommend it. The rest of the song isn't much, but that intro is awesome.

If you can sing you could do 'drive', by incubus. That's always a favorite. Or maybe try some van halen, that's always good. 'One', by metallica, is also a good cover piece.