Can you imagine anyone else playing Indiana Jones besides Harrison Ford? It almost happened, but lucky for us, the superstar, who's celebrating his 80th birthday today on July 13, landed the iconic role. It's indicative of the small world in Hollywood, with actors always competing for the same roles. Sometimes an actor turns down a role because of creative differences or scheduling conflicts, but sometimes they just don't make the cut. Here are some iconic movie roles that almost went to someone else, including another of Ford's most legendary characters.