Bill D ickens and Victor Wooten are both incredible technicians. D ickens was Wooten's teacher, btw.

That said, I'd go with "Summer Romance (Anti-Gravity Love Song)" by Incubus as a good, fun, easy 1st bass song. It's off of their album S.C.I.E.N.C.E. Dirk Lance is a killer bassist, but has the taste to play whatever's appropriate for a song.