Zelig is a 1983 American mockumentary film written and directed by Woody Allen and starring Allen and Mia Farrow. Allen plays Leonard Zelig, a nondescript enigma who, out of his desire to fit in and be liked, takes on the characteristics of strong personalities around him. The film, presented as a documentary, recounts Zelig's intense period of celebrity in the 1920s and includes analyses from present-day intellectuals. Wikipedia
Leonard Zelig: I love baseball. You know, it doesn't have to mean anything. It's just very beautiful to watch.