If you saw photos of famous celebrities like Robert Downey Jr., Chris Hemsworth, or Angelina Jolie, you'd probably go... "Oh, right! There's where I've seen them!" But the actors on this list are a rare exception. You see, when they first started out, they were virtually unknown in Hollywood. Then again, everyone has to start out somewhere. You can't just expect to become an A-List celebrity overnight. It's a steep and treacherous climb towards Hollywood fame. So, in honor of all that hard work, we're going to start with one of the hottest celebrities of all time.