5. George Clooney - Batman & Robin
The unimaginable disaster that was Joel Schumacher's Batman & Robin hurt George Clooney's career tremendously. He was trying to establish himself as a serious actor after he got bored of being a heart-throb on ER, but ended up in one of the campest movies to ever appear in a cinema. It was the bat-nipples that pushed everything over the edge. Clooney eventually fought his way up to become one of the most respected actors in Hollywood by associating himself with directors such as Steven Soderbergh and the Coen brothers by collaborating with them several times. Clooney took the rare step in admitting that Batman & Robin was utterly terrible and that he singlehandedly nearly ruined the Batman franchise. Clooney's apology featured more wit and grace than the movie he was actually apologising for, and it's nice to see some self-awareness in Hollywood for a change.