During my long drive to UCLA on the 10 slowway (freeway? I don't feel free driving at 5 mph) every morning, I listen to the Mark and Brian radio program.
Since I am not a native speaker, I don't really understand many of their jokes. However, I know they are damn funny since one time a guy called them and said that he had to pull over and laugh for quite a while before he could resume driving after he listened to their joke.
I think this one with Brian imitating Michael Jackson is pretty funny, especially when he said "Whu Who" Ha Ha Ha. Enjoy :)