As we've previously discovered, film stars a egotistical bunch, and with people around to bow to their every whim, they can get a bit carried away.
When major Hollywood players work on the film, they are treated to certain freebies and goodies, but sometimes they reel off a list of demands that are bizarre, self-centred and ridiculous.
Movie stars get paid unimaginable amounts of money to act in films, while flying to exotic locations and having people lavish them with lots free goods and telling them how get they are.
But it seems they have very fragile egos, and sometimes, when two stars' ego's collide, it can be a explosive and destructive issue.
Sometimes, when the role requires it, actors have to spend hours in the make up chair, getting prosthetics glued onto their skin, being daubed and prodded with make up brushes and even, just maybe, donning a fatsuit.
When it comes to Hollywood, there are some constants that we can always rely on: Harrison Ford will play the cocky swaggering hero, Jim Carrey will flail around like an over-excited Daddy Long Legs and Tom Cruise is the pearly white-toothed hero who always saves the day with a wink and a cheeky grin.
Exactly 21 years ago, UK audiences got the chance to lay their eyes on Ace Venture and his wacky behaviour and catchphrases.
Now to celebrate the film being old enough to drink in the USA, we've compiled a few interesting facts about Ace Ventura: Pet Detective that you probably didn't know...
1. There is a clue to Einhorn's 'secret' on her desk
