A hallmark of Robert Zemeckis' iconic trio of sci-fi comedy films, the Back to the Future franchise features many running jokes that consistently pop up across the course of the trilogy.

That’s why, when user Kevbot1000 asked r/AskReddit, “What's a running joke on a series that never stopped being funny?,” not ...

Dr. Saperstein, played by the inimitable Henry Winkler, is part of multiple running gags in the show, like his feud with Tom. But the best one is his awful kids, Jean-Ralphio and Mona Lisa. Both ...