Gene Stupnitsky (born August 26, 1977) is a film and television writer and producer. He usually works with Lee Eisenberg, with whom he founded Quantity Entertainment. Eisenberg and Stupnitsky have worked together on several screenplays, many of which they have produced as well. Along with Harold Ramis, they wrote the screenplay for Year One, which starred Jack Black and Michael Cera, and was released in 2009. Following that, they wrote and produced the film Bad Teacher, which starred Cameron Diaz and Justin Timberlake. They are serving as producers of the upcoming sequel Bad Teacher 2. Eisenberg and Stupnitsky wrote a screenplay for Ghostbusters III, but it was not produced. Eisenberg and Stupnitsky will be making their directorial debut with Good Boys.

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