If you have some time, watch the video above and ask yourself: why do you find him funny? Is it solely due to his comic ability? Would it have made a difference if he was from another race, gender, age etc. ? Was there anything about this man that stood out even before he uttered a word?
The human mind is conditioned to always expect certain conventions in social life (i.e. you already know what sort of demographic to expect when taking your daily bus to school) and one way comedians try to rattle our funny bone is to simply question or mangle these conventions or expectations to often rather humorous ends – this could be why minorities or prejudiced people often make the funniest comics (look at the Axis of Evil for instance).
Enjoy the shows! But also question why we find them enjoyable as well.