11. George Clooney - Dracula
Imagine, for a moment, a world in which George Clooney was in Francis Ford Coppola's Dracula. Your mind probably immediately conjures the image of him with Gary Oldman's outstanding wig as the neck-biter general, but the reality is that Clooney was just starting out back then and the only role he was up for was a drunk.
Being the absolute sport he is - and, by his own admission - terrible at auditions, he decided the best way to convincingly play a drunk was to literally be drunk:
"I remember I was very bad at auditioning. I went to audition for Francis Ford Coppola to play a drunk in Dracula. I thought it would be a good idea if I were to get drunk for the audition to get the part... Afterwards, Coppola phoned the agent and told him, 'Hey, Clooney was drunk!' So that didn't work out."
Who'd have thought it?!