Notice how quickly he leaps into character once he steps away from the makeup station. It's a really thrilling piece and a fine tutorial on old style stage makeup.
I was once compared to a young Orson Welles in a review and it made me swell with pride. It also made me want to buy the reviewer a steak dinner. I see this video and shed a single tear looking at his greatness.
So check out this stellar video of Orson Welles at the Dean Martin show. When it's over take a few moments to soak up what you just saw and then take a few moments to fathom how much those two boozed after the show was done filming.