Ehrenreich was discovered at a friend's Bat Mitzvah reception by Steven Spielberg, when Spielberg watched a comedy video created by Ehrenreich and a friend, "which began in the present and eventually cut to 20 or 30 years later, with Mr. Ehrenreich, in a kimono, screaming to stop a wedding. " Ehrenreich has described the comedic performance he gave in the movie as, "I ran around as a skinny little punk, trying on girls' clothes and eating dirt. " He was then contacted by DreamWorks, a studio which Spielberg helped found, and met with its casting director. Spielberg said: "[Ehrenreich] was in a bat mitzvah video that my daughter acted with him in for their best friend. They showed me the video and I loved it and I got him an agent. That's sort of how it all began. " "I thought he had a lot of promise in comedy," the Oscar winner explained. "I didn't know he was going to rogue [into] drama. He was so funny in this video, I thought, 'I have found the next really funny comedian. ' But most of his choices have been in drama and people don't know how really funny he is. " "