Some good punk and funk singing bassists there folks.
How could we forget Suzi Q, TomTom (I'm ashamed to say I forgot).
This guy (I think him name is Ras-I-Ras) from the Easy Star All Stars is superb (nice 5 string bass too):

Also not forgetting Gail Ann Dorsey who is mighty on the bass:
http://www.ampeg.com/artists/artist.php?artistID=40