Trivia: The instrument that Uncle Monty plays to the children is called an autoharp, from the Appalachian mountains - it's like an accordion, but the piano keys have been replaced with harp strings. Billy Connolly can actually play this instrument in real life, and the song he sings to the children is a song about Scotland, Billy's homeland.
Trivia: When Jim Carrey, as Count Olaf, is being told that the Baudelaires parents are dead he says "Yes, of course. How very, very awful". Then he suddenly says "Wait, let me do that one more time. Give me the line again. Quickly, while it's fresh in my mind.". That was pure improvising and was not supposed to be in the movie. Jim Carrey actually wanted to do that shot again. But the directors thought it fit in the movie and included it.
Trivia: During the wedding, Violet tries to sign the marriage certificate with her left hand, and Olaf immediately stops her. The explanation is referenced in the book, in which the marriage was annulled as the justice rules since Violet signed with her "wrong" hand, she could not have been said to have signed with her legal hand.
Trivia: The train scene is full of references to the books. The store Count Olaf goes into is called "Last Chance General Store", which appeared in the 8th book. There is an ad in the window for parsley soda which is from the 6th book. Finally, the words "Veritable French Diner" are on the back of the magazine Olaf is reading. These have the initials VFD, which is the secret organization in the books.
Trivia: The car Count Olaf drives is a 1960 Chrysler Crown Imperial Limousine. These were ultra-expensive for the time period, retailing for $16,500 in 1960 dollars. This translates to an incredible $104,556.45 in 2006 dollars. Therefore, it is no surprise that only sixteen 1960 Imperial Limos were made (including one for Jackie Kennedy). The dashboard of Count Olaf's limo was made for the film and is nothing like a 1960 Imperial dash, and there were no lock "plungers" on the real car's doors, but the rest of the car is original and unmodified. See http://www.imperialclub.com for more information.