It's not often a guest can virtually silence Bill Maher on his own show, but Dana Carvey - who you don't see that often anymore - put on a comedy clinic on "Real Time" Friday. The host could barely get a word in edgewise as Carvey appeared and virtually took over the entire segment. (The RFK stuff was especially hilarious to me.)

It was quite a performance, and if you want to see how it's done, have a look at a Master at work. (It actually lasted a lot longer than this, but here's the sample they put online.)