The monologue in pulp fiction is a classic. It seemed like he was trying not to laugh, which made it a lot better. One of my alltime favorite movies stars CW, "Dogs of War", absolutely bitchin' from beginning to end, well, it slows a bit in the middle but it serves the purpose of telling the story.
Hmmm. Christopher Walken as president... Could be an improvement. People say he zones out, just stops everything and is found staring straight ahead, nobody home, can't be aroused... If he zoned out during the televised debates it would be a problem for him, or it might work, people would think he was a mystic.