"It was a bit distracting because when you have a great performance like Gene Wilder's, it's very difficult to get that out of your head, but I deliberately didn't go back and watch either movie... It's a bit like doing Bond - you have to pretend it didn't exist until your version of it, and hope that people rediscover it with you." Director Sam Mendes on making his new stage version of Roald's Dahl's Charlie and the Chocolate Factory, which officially launched in London on Tuesday (25Jun13).