Remember the old Dean Martin roasts?

Foster Brooks still kills me
YouTube - Foster Brooks on Dean Martin Roasts

Casey Kasem as Adolph Hitler?! (Listen to how Dean Martin pronounces his name).
YouTube - Adolf Hitler Roasts Don Rickles?!

More of Foster Brooks roasting people
YouTube - Foster Brooks Roasts Some Folks

Not a roast, but still funny as hell.
YouTube - Drunk Airline Pilot