For your consideration... Mr. Stan Lee!
(While I still haven't met Stan Lee, perhaps my undying support shall aid in this quest.)
And, as long as we're talking Funny Or Die videos, it was quite the sight for a comedy fan like myself to see generations of "Saturday Night Live" presidential impersonators brought together in this video (with a special appearance by Jim Carrey pinch hitting as Reagan):
It made me miss the late, great Phil Hartman. His all-time classic appearance in the Clinton at McDonalds sketch: