Listen to the Music is one I always look forward to playing bass on, but it's a mixed blessing for me because I have to sing it as well.

It's just on the very edge of my range.
Dark Eyed Cajun Woman (also by the Doob's) is an even groovier bassline with lots of room for expression in it.
My favorite bass line to play live (at least this week) is
Closer to Home by Grand Funk Railroad. It has nearly everything from the bass player's toolbox in it, and in quantity: hammer-ons and pull-offs, chords, triplets, arpeggios, runs, syncopation, incidentals galore............... Mmmmmmmmmmmmmmmm. Bass.
