This is the fhqhwgads song.  It rocks much.

Here is the main bass riff transcribed for guitar (to play on bass simply ignore the top 
lines).

   _                                                      _
e |--------------------------------------------------------|
B |--------------------------------------------------------|
G |--------------------------------------------------------|
D |-----------5--------5-h-7-------------------------------|
A |---0-h--7--------0--------------------------------------|
E |--------------------------------------------------------|

If you continue with this pattern, it's pretty simple to do some improv solo guitaring 
the bass/guitar 2.  Sort of like pink floyd/jam band stuff.  It could go on for a really 
time.  Have fun.

Legend:

h - hammer on