Will Smith - 'The Matrix'

You'd think passing on The Matrix's Neo, one of the most iconic film roles in the last 20 years, would leave you upset. But when you're as famous as Will Smith, you can afford to miss these types of opportunities. Besides, as the actor said: "I just didn’t see it. I watched Keanu's performance – and very rarely do I say this – but I would have messed it up." So there you have it.