During a break from rehearsals in Toronto, Luke Mably (Eddie) and 'Ben Miller' (Eddie's valet, Soren) went out while in character to the Four Seasons and convinced everyone that Mably was the Prince of Denmark. They were demanding tea and cake and had six waiters around them, bowing.
The driver that Eddie races with at the start of the film is Eddie Irvine, a professional race car driver in real life.
The film includes footage from To Catch a Thief (1955), featuring Grace Kelly. Like the Julia Stiles character in this film, Kelly was also an American who became a European princess, when she married the prince of Monaco.
The "Star Trek: The Next Generation" (1987) episode that Paige and Beth watch in the dorm is titled "Best of Both Worlds: Part 2" (Episode 175) and is from Season 4 of that series.
The game that Scotty always has up on his X-Box is Halo (2001) (VG).
During filming, Luke Mably accidentally cut himself on the meat slicer. In the shot of Paige and Eddie dancing at the coronation ball, you can see his left index finger wrapped up (in a condom, according to Luke Mably in an interview) to cover the wound.
During the release of this movie, the real heir to the Danish throne, Kronprins Frederik, married his Australian wife Mary Donaldson, later known as Kronprinsesse Mary.
The Shakespeare sonnet Eddie and Paige discuss/analyze over laundry (and Eddie quotes in his goodbye note to Paige) is Sonnet #148, from which they skipped over several lines.