Interactive film screenings aren’t just for The Rocky Horror Picture Show; these days Minnsky Players have been giving the same treatment to classic, family-friendly favorites from the ’80s. This weekend is all about The Princess Bride, a star-studded fantasy flick that is part comedy, part romance, and part (gentle) action. When a little boy stays home sick from school, his grandfather reads a story to him about Westley, a bold man who must free his true love, Princess Buttercup, from marriage to the evil Prince Humperdinck. The cast includes Andre the Giant, Robin Wright, Cary Elwes, Wallace Shawn, and many others. As the film screens, actors onstage will get everyone involved with callbacks, props, and more.