In Season 3: Episode 3, Diana (Marsha Thomason) has to speak in an English accent for an undercover assignment. In real life, Marsha Thomason is from Manchester, England.
In season two, the decreased presence of the character Elizabeth Burke, and conspicuous green-screen scenes, was due to the pregnancy of her actress, Tiffani Thiessen.
Inspired by the exploits of Frank Abagnale Jr who was once a counterfeiter and confidence trickster who ended up working for the FBI
Charles Dickens references: In the episode "Upper West Side story", where the class is studying "A Tale of Two Cities," Mozzie introduces himself to Evan as Professor Magwitch. Mozzie also often uses the alias "Havisham." Both are names of characters in Great Expectations.
One of Neal's aliases is Nick Halden. This is a reference to the name of Tony Curtis' character in the movie "Operation Petticoat"