Being famous and having an opinion isn't always an easy combination. With a rabid band of PRs, agents, managers and lawyers, they're constantly having to self-censor anything that hasn't come from a pre-written, pre-tested script.
But when it comes to talking about their favourite films, they're usually on safe ground. Providing that they steer clear of any Nazi propaganda films or anything starring Katherine Heigl.
Here are 50 celebrities. Click on each to find out about their favourite.
(Images: Rex Features, All Star)