8. Jeremy Renner
Jeremy Renner rocketed to stardom over the past few years, finding a niche for himself as Action Guy in films like The Avengers and The Bourne Legacy. But when he's not throwing himself off buildings or practicing his archery, he's apparently honing his skills as a song and dance man. Exhibit A: his memorable turn as a Death Row inmate in Love Comes to the Executioner, where he sings American Pie all the way down to the lethal injection room. While he's clearly a little rough around the edges, his voice is surprisingly good -- after all, he's not exactly trying to sound like a classically trained Broadway vet, is he?