Oscar's line "Tell me if this hurts, Felix, because I don't know what the hell I'm doing." while trying to help Felix's back and the action of pulling on Felix's neck comes from the play and the 1968 movie adaption of "The Odd Couple"
The squid that Felix & Oscar win but trade is the same squid that Lenny & Squiggy have a box of in their apartment in the "Hi, Neighbor" episode of Laverne & Shirley.
On the real Let's Make a Deal, there are no ZONK prizes in the Big Deal.