Jerry Lewis and Dean Martin

When I hear slapstick, I instantly think Jerry Lewis (and/or Dean Martin). Lewis' facial expressions are unrivaled, in my opinion, and I love Martin's ability to remain utterly serious in the face of such ridiculousness. This is something that I have noticed in much of the slapstick I've watched - that insanity can unfold, but the victim of the 'violence' reacts in a very understated manner.