On bass I really like Hysteria, ironically it is easier to play on a bass then on Rockband/ Guitar Hero. I also like Butterflies and Hurricanes on the bass. I struggled for a while trying to figure out the taps but eventually got it nailed from watching the live in Glastonbury dvd.
On guitar I like Exo-Politics (especially the lead), Plug in Baby, Unintended, Newborn (very tough), and Knights of Cydonia.
What tunes do you like to play?