Who knows of "Bill and Bonnie" ?

I suppose you mean Bill and Bonnie Hearn. Great Texas entertainers from Austin. A married couple, they are most distinctive by both of them being legally blind !

Hmmmm, don't ring a bell..i'll stick around for the right answer.

HHHMMMMM..........Bill Clinton and Bonnie Ratt?

Do you mean Billy and Bonnie by Steve Earle?? If so, yes I do. =]