The phrase "infamous scene" refers to a particular moment or event within a movie, play, or book that is widely known and highly disreputable or notorious. Full definition
When Call Me By Your Name premiered last month at Sundance, big buzz concerned whether or not the film would keep the most infamous scene from André Aciman's source novel. (hornet.com)
One of the most infamous scenes from The Room is Johnny (Wiseau) incoherently refuting the claim that he hit his girlfriend, Lisa (Juliette Danielle), and then noticing his best friend, Mark, midsentence. (theringer.com)
We also had time to cover the sort of preparation each made to play such realistic characters, the way Ayes kepts the actors informally separated into distinct cliques, and, of course, that infamous scene where Martinez's charcter explains in sometimes graphic terms how a cop's new bride should go about keeping her man happy. (killermoviereviews.com)