Everyone falls on hard times -- celebrities included. Unless you've managed to successfully navigate Hollywood by being dubbed America's Sweetheart, having a keen business sense, or steering clear of drugs and booze, it can be a tough place to build a consistent career. Some former stars flamed out and then made successful, mature comebacks. Others...well, not so much. The folks on this list vary from the very talented but tragic to fame-seekers who rode the coattails of their more respected mentors and lovers. What do they have in common? None of them are up to very much these days. Here are 10 celebrities who no one wants to hire.