Some notables I can think of are:

Kevin Powell -- from the first RW. I remember he was writing for VIBE at one point, and since then he's been hailed as a poet, journalist and essayist.

Sean from RW Boston -- I know he's the District Attorney of his city and was thinking about making a run for Congress.

Kit from the first RR season. She was an entertainment correspondent for a bunch of shows. Now she's on ESPN2's Cold Pizza.

And who could forget Melissa from RW New Orleans? I love Girls Behaving Badly!