Songs That Should Not Work on Instagram: "The Backstreet Boys cameo was kept a complete secret during production — even most of the crew didn’t know about it. The scene was filmed after principal photography wrapped, making its surprise ending hit even harder. Seth Rogen later revealed he was shocked by how brutally the cast roasted each other on set — especially Jonah Hill and James Franco, whose jabs got so intense that Rogen had to step in and remind them they were actually friends. To make t