Not in a theater, but I got to do a late-night event at a comic store a few years ago where we were riffing on Hard Ticket To Hawaii
When I was a kid, my cousin and his friend took me to see Jaws III, I think it was.
Anyway, Hall & Oates’ “Maneater” was big at the time, and at some point in the beginning of the movie I sang out “Whoa oh, here she comes”, in my best Daryl Hall voice; people started laughing, and my cousin and his friend were looking over at me like “What did you just sing?”
I’ve never done this in public unless I’ve rented the theater or were somehow the reason why people bought a ticket…and this has happened for me. When I debuted as Movie Scrapple at Philadelphia Fringe, we wrote a riff for the movie, but when I brought the show back, we did improvised riffs to things like Zardoz, The Magic Sword, The Little Shop of Horrors, and that Captain America film starring JD Salinger’s son. It’s a slightly different mindset doing improvised riffs and I think improvisers work better than stand-ups for the task. Like you can have standups working on a written riff, but improvisers instantly understand the idea of taking and giving focus more with your fellow riffers and the film itself.
Not my riffs, but notable because they got laughs from the entire audience:
Aliens: Ripley has just agreed to go on the mission to the colony planet. She’s holding Jonesy the cat up and says “And you, you little sh*t-head… you’re staying here.” Someone in the audience yelled out “No. Problem. Sigourney.”
Attack of the Clones: Audience wasn’t really vibing with the movie. Yoda says during a close-up, “Pain, suffering, death I feel…” Dude somewhere up front says loudly, “No, I don’t think anyone out here has died yet.”