Conan O Brien?
He’s a veritable chameleon. A Karma Chameleon!
Lobohan got it - that’s Boy George, far from his heyday when he looked like this: http://static.guim.co.uk/sys-images/Media/Pix/pictures/2007/11/02/cosmogeorge500.jpg
No guesses? I’m dying to reveal this one!
I could guess but it would be a bad guess.
Near as I can tell, no one answered this - Grace Slick and Janis Joplin…as verified when I hit Reply and saw the url…
Is it Raven? 
I love/hate this thread - every picture looks SO FAMILIAR! ETA: I have a great memory for faces; lousy memory for names.
I can’t take it anymore!
Stephen Colbert
The closest I could come was that I figured out it was a dude.
Oh… I was gonna say Laura Bush.