Three guys I like a whole lot...
John McLaughlin
Check out the first three Mahavishnu Orchestra albums, his work with Miles on Bitches Brew, In a Silent Way etc, his work with Al DiMeola and Paco diLucia, The John McLaughlin Trio (with Kai Ekhardt and Trilok Gurtu), his Coltrane tribute After The Rain, his work with Carlos Santana, etc.
John Scofield
He's way funkier than any white guy has the right to be. I love A Go Go and the more recent Out Louder, with Medeski Martin and Wood.
Django Reinhardt
No specific recommendations here - I just love this music.
Chad