I don't know anyone who ever saw the movie Hot Stuff. Dom DeLuise and Jerry Reed are cops working undercover as a fencing operation to bust somebody-- who cares who, because it's some really funny stuff. My brother and I were on the floor laughing when we watched it as kids. Another little known movie is Loose Cannons starring Gene Hackman and Dan Aykroyd. DeLuise plays an overweight smut dealer with some great one-liners. But nothing beats Cannonball Run and even the sequel. Just take a look at the outtakes:
DeLuise was also genius on Carson. Here's another gem from somewhere around 1978 from "The Tonight Show," with Johnny Carson. R.I.P. Dom.