@Wayne:
I'm a great fan of George and Funkadelic too.
My idea of 'funk' is no doubt broader than yours.
E.g. I think of certain Curtis Mayfield tracks as funky.
Then there's Fred Wesley and Joe Quarterman.
Although these guys wouldn't be under the heading 'Funk', down at the record shop, some of their stuff is most definitely 'funky'. :-)
@Eyso:
Prince can be very funky too.