In the same vein as the 'Where Is This?' thread, which is a spin-off of the 'What Is This?' thread, I gleefully present you with '
Who Is This?'
We'll rule out TinEye and drag'n'drop Google Image searches right off. You can still use words to do a Google Image search, though I'm not sure how you'd go about it.
So, without further ado;
Who is the gentleman on the left?