Shaun Maher showed up for a rodeo and ended up in the biggest movie of the summerHave you heard the one about the guy who thought he was going to a rodeo and ended up with a part in a major motion picture? No? Well, sit back, get comfortable, and try to follow along. This story has a few twists and turns. Okay, it’s got a lot of twists. Meet Shaun Maher, a 27-year-old former rodeo comp...