They are a bloody dictator, diamond smuggler, crack-smoking school teacher, lecherous old man, and self-centered dad. But when it comes to winning an Oscar for best acting, the more human flaws, the better. This year’s Oscar nominees for best lead actor–Forest Whitaker, Leonardo DiCaprio, Ryan Gosling, Peter O’Toole and Will Smith–portray characters so fault-ridden that they are hard not to like. In fact, Oscar loves them. Bob Tourtellotte reports.