Goofs:
Errors made by characters (possibly deliberate errors by the filmmakers): While watching Charlie play blackjack, one of the casino security officers says that "no one can count through a six deck shoe". In fact, this is quite possible for someone with just basic math skills to do using the "hi-lo" counting method. A security officer of any major casino should know this. (more)

Trivia:
Hans Zimmer's first Hollywood score. (more)

Filming Locations:
Caesar's Palace - 3570 Las Vegas Boulevard South, Las Vegas, Nevada, USA (more)

Quotes:
[first lines]
Charlie: [on telephone] Now it's five and a half weeks and I'm still sitting on four Lamborghinis that can't meet spot emissions standards. Now, how many times you wash out with EPA?
Lenny: [on a separate line] Uh, yes sir, they're finally, uh, clearing EPA; uh, just one or two more days.
Charlie: Three times? You're really on a roll here, my friend; four cars, three times each - that's zip for twelve. What are you, a... mechanic, or a NASA engineer? Now listen, now, I told you I've never dealt with these Lamborghinis before, and yet you assured me that you can deliver these cars within that time frame. Don't, don't tell me that, 'cause I - I'm not even listening.
(more)

Awards:
Won 4 Oscars. Another 19 wins & 13 nominations (more)