Cinderella story. Outta nowhere—as in the improvisation during the filming of the iconic comedy with balls. Much of Harold Ramis’ 1980 directorial debut, “Caddyshack,” was ad libbed, so much so actor Ted Knight (Judge Smails) became incensed. Incredibly, Bill Murray didn’t have a single written word in the script, and while the filming for the movie took place over 11 weeks, the entirety of his scenes were shot in six days, being called away from his duties on “Saturday Night Live.”

All the improv dramatically reshaped the film, and as result, characters played by Rodney Dangerfield, Chevy Chase and Bill Murray (Al Czervik, Ty Webb and Carl Spackler) took on much larger roles. Now more than 30 years later, the film ranks as one of the funniest sports films of all time—if not the funniest film across any genre—and, with the endless one-liners, it’s no wonder. Pay homage.