My bassist is a pretty phenomenal player, and if I asked him, I can guarantee you he's say "look at some Primus bass riffs" I'd have to agree with that. Also, Victor Wooten...Umm, lemme see, you can use slap techniques...umm, when I play bass, I usually use tapping...A cool one is to tap up the scale with a drone note every other note. So you'll go up like this:

E|--5--t7--p5--t8--p5--t10--p5--t12vvvvvv--

Like that...uhh...that one's in Am...On the low E string... and then just repeat it. That kind of thing...You could also use a walking bass, but that's mainly for blues.