Surprise, Surprise!!!

The rich, aristocratic Katarina Hassel have an architect renovate her mansion. Katarina fall in love with the young architect, Gunnar Stenwall. Alas, he doesn't fall in love with her. But perhaps if Gunnar would meet her identical sister, who works in Stockholm as a waitress, he would fall in love with her instead? So Katarina travels to Stockholm to act as her non-existing sister.

Anthony Hope's classic tale gets a decidedly 'un-classic' treatment at the hands of Peter Sellers. Following the story somewhat, friends of the new King Rudolph of Ruritania fear for his life, and switch him with a look-a-like London cabby. Throw in two(!) lovely blondes, treachery, and a battle for life and honour, and enjoy life at its zaniest.

Hallie Parker and Annie James are identical twins separated at a young age because of their parents' divorce. Unknowingly to their parents, the girls are sent to the same summer camp where they meet, discover the truth about themselves, and then plot with each other to switch places.

A case of mistaken identity forces a Federal agent and a dental supply salesman to team up as they speed through the streets of Detroit to pull off a sting operation and solve the murder of the agent's former partner.

Nelson Hibbert expects to become the new president of Nagel Industries, but Mr. Nagel gives the promotion to another employee. When Nelson barges into Nagel's office to confront him, he finds Nagel's been murdered. Fearing that he will be implicated, Nelson decides to run from the law...despite the fact that the police already know the killer's identity.

After accidentally witnessing a mafia hit in the Windy City, gal pals Connie and Carla skip town for L.A., where they go way undercover as singers working the city's dinner theater circuit ... disguised as drag queens. Now, it's not enough that they become big hits on the scene; things get extra-weird when Connie meets Jeff - a guy she'd like to be a woman with.

Disguised as her daughter, Anna's mother slips into French lessons to supplement little daughter's notes. She strikes her best in class, but she also shows what she is capable of in the group in the afternoon. As the headmaster uncovers the mother-daughter delusion, it becomes all the more praiseworthy.

A schoolgirl and her older girlfriend seduce the teacher in order to improve their grades.

A hapless orchestra player becomes an unwitting pawn of rival factions within the French secret service after he is chosen as a decoy by being identified as a super secret agent.

Boy meets girl; boy falls in love (and had wild, non-stop sex) with girl; boy loses girl... when they discover they are brother and sister! But when he learns that he's the victim of the ultimate case of mistaken identity, the lovesick young man - whom everyone still thinks is after some taboo thrills - must race across the country to stop her from marrying another man.

Algernon Moncrieff is surprised to discover that his affluent friend - whom he knows as "Ernest" - is actually named Jack Worthing. Jack fabricated his alter ego in order to escape his country estate where he takes care of his charge, Cecily Cardew. Cecily believes that Ernest is Jack's wayward brother and is keen on his raffish lifestyle. Algernon, seeing an opportunity, assumes Ernest's identity and sneaks off to woo Cecily.