23 Big-Screen Best Friends Who Turned Into More

Does sex complicate friendship? In the case of Zack (Seth Rogen) and Miri (Elizabeth Banks) in 2008's "Zack and Miri Make a Porno," the answer is a resounding yes. Friends since first grade and now broke-as-a-joke roommates, the two make their own porn video in order to pay the bills. But when they're finally faced with the task of doing the deed on camera, it becomes clear that this isn't just part of a day's work — they're actually in love.