Offering an inside account, Dustin Diamond is telling all about Saved By The Bell, where he claims drugs were used and sex was common on the set of the old NBC morning show.

"I could smell a certain 'smoke,' wafting from from the crack" underneath his castmates' dressing rooms, says Diamond, 32, who played the dork, Screech.

As we all know, many movies are ironically cast at the outset simply to showcase an actor’s diversity or to make some larger point. Examples in this league include Charlize Theron as a grotesque killer in Monster and Brad Pitt as a slummy, badass in Fight Club. However, some movies don’t reveal their ironies until many months or even years after an initial release. These cases are not only intriguing on their face value, but they sometimes make it seem like the movie itself has a role in determining the actor’s fate.