1. Aunt Jemima & Uncle Ben
    Arguably my favorite aunt and uncle.
  2. Tapatio man & Cholula woman
    Power couple!
  3. Gorton's fisherman & Mrs. Paul
    Mrs. Paul doesn't seem to like to show her face, which means to me that the Gorton's fisherman is NOT Mr. Paul.
  4. This doesn't count, but the Tostitos logo shows two people sharing a chip over a bowl of salsa.
    Suggested by   @GargiBera