Filming
All filming locations were in the state of Hawaii and in Los Angeles. While filming, lead actor Jason Segel told a New York Times interviewer that the naked break up scenes were based on a real life experience he had. The film features a great deal of improvised dialogue; according to director Nicholas Stoller, it's "60 or 70 percent scripted and then 30 or 40 percent improv".
Stoller stated that Judd Apatow was very involved in the casting process and the development of the script. Regarding the nudity in the film he added that the first draft of the script called for the (Peter Bretter) character to get dressed after the breakup, but he thought it would be funnier if the character stayed naked the entire time. However, he confirmed the picture of Mila Kunis used in the film was created on a computer and not real.
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