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)
David Cameron
Favourite film:Lawrence of Arabia
Russell Brand
Favourite film:The Elephant Man
Alex Ferguson
Favourite film:The Godfather
Jason Bateman
Favourite film:There Will Be Blood
Harrison Ford
Favourite film:To Kill A Mockingbird
Condoleezza Rice
Favourite film:Casablanca
Michael Caine
Favourite film:The Third Man
Tiger Woods
Favourite film:Caddyshack
Eva Mendes
Favourite film:Anchorman
Stephen Merchant
Favourite film:The Apartment
Bill Nighy
Favourite film:Punch-Drunk Love
Michael Jackson
Favourite film:E.T.
Charlize Theron
Favourite film:Rear Window
Cristiano Ronaldo
Favourite film:The Rock
Mick Jagger
Favourite film:Apocalypse Now
Christian Bale
Favourite film:Beverly Hills Ninja
Bill Gates
Favourite film:Ordinary People
Tom Hardy
Favourite film:Platoon
Albert Einstein
Favourite film:City Lights
Julianne Moore
Favourite film:Rosemary's Baby
Tony Blair
Favourite film:Rush Hour
Cameron Diaz
Favourite film:Animal House
Bill Clinton
Favourite film:High Noon
Michael Owen
Favourite film:Cool Runnings
Mark Ruffalo
Favourite film:On The Waterfront
Sarah Silverman
Favourite film:Sleeping With The Enemy
Prince William
Favourite film:The Italian Job
Morgan Freeman
Favourite film:King Kong
Brandon Flowers
Favourite film:Forrest Gump
Andy Murray
Favourite film:The Girl Next Door
Sam Worthington
Favourite film:Die Hard
Kanye West
Favourite film:Coming To America
Jonah Hill
Favourite film:Goodfellas
Nick Clegg
Favourite film:The Class
Juliette Lewis
Favourite film:What About Bob?
Andy Warhol
Favourite film:The Creation Of The Humanoids
James Franco
Favourite film:My Own Private Idaho
George W Bush
Favourite film:Field Of Dreams
Quentin Tarantino
Favourite film:The Good, The Bad & The Ugly
Lady Gaga
Favourite film:Rocky
Jesse Eisenberg
Favourite film:Hannah And Her Sisters
Chris Martin
Favourite film:Back To The Future
Natalie Portman
Favourite film:Dirty Dancing
Thom Yorke
Favourite film:Arthur
Rihanna
Favourite film:Napoleon Dynamite
Brad Pitt
Favourite film:Planet Of The Apes
Liam Gallagher
Favourite film:Quadrophenia
Chuck Palahniuk
Favourite film:Harold & Maude
Nick Nolte
Favourite film:Dr Strangelove
Roger Federer
Favourite film:Good Will Hunting
