Trivia: In order to acquaint himself with his three lead actors, director Alfonso Cuaron had each of them write an essay about their characters, from a first-person point of view. Emma Watson, in true Hermione fashion, went a little overboard and wrote an 16-page essay, Daniel Radcliffe wrote a simple one page paper, and Rupert Grint never even turned his in, as he said that is what Ron would have done.
Trivia: In the last scene when the everyone meets to play poker Catherine Zeta Jones throws her hands up to celebrate a win and falls out of her chair for real.
Trivia: In the opening scene where Mia is introduced and waves to the crowd from atop a staircase, (wearing a big red dress) she accidentally flings a bracelet off her wrist, where a footman catches it. That is the same footman who catches the snail Julia Roberts flings in Pretty Woman, and he uses the same line "It happens all the time".
Trivia: The actor playing Adam is actually a co-writer of Saw. The film was shot in 18 days and for under a million dollars, and it all took place in 2 warehouses. The writers/directors wanted to make a movie about people trapped inside a single room.
Trivia: If you listen very carefully to the part where Al MIchaels says, "Do you believe in miracles? YES...", you'll notice that it's from the original broadcast of the game in 1980. All other play-by-play was re-done by Michaels as the movie was produced. The reason they used the original 1980 broadcast for just that specific moment is that Michaels had a difficult time recreating the emotion and excitement he felt when shouting it as it really happened.Matty Blast