Twins, separated at birth, end up as a Hong Kong gangster and a New York concert pianist. When the pianist travels to Hong Kong for a concert, the two inevitably get mistaken for each other.
Aspiring architect Tom Thompson is told by mysterious Ruth Abernathy that his best friend, "Bill," has taken his own life. Except that Tom has never met Bill and neither have his incredulous friends. So when Tom foolishly agrees to give the eulogy at Bill's funeral, it sets him on a collision course with Ruth -- who is revealed to be Bill's oversexed mother -- and Julie DeMarco, the longtime crush Tom hasn't seen since they were teens.
A young radio announcer living in Warsaw, who also is a swing and jazz musician, continually feuds with his landlord, a classical musician. A mixup of names and apartments leads to amusing complications as the young tenant falls in love with a young woman who, unbeknown to him, is the landlord's niece.
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.
When a foreign-exchange student and a hooker - both named Dominique - show up on a college campus, the unsuspecting student body is in for the education of a lifetime!
Comic mayhem ensues when two lovely blondes, Dee and Dawn, are mistaken as international mob killers.
The two brothers Trinity and Bambino are exchanged by two federal agents and take advantage of the situation to steal a huge booty hidden in a monastery by a gang of outlaws.
When ordered to serve a year in rehab, actress Candy hires her on-set stand-in to take her place. The unassuming woman flips the script and steals her identity, career and boyfriend in this hilarious comedy about trading places.
New Yorkers Skip Donahue and Harry Monroe have no jobs and no prospects, so they decide to flee the city and find work elsewhere, landing jobs wearing woodpecker costumes to promote the opening of a bank. When their feathery costumes are stolen and used in a bank robbery, they no longer have to worry about employment — they're sent to prison.
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.
Two escaped convicts roll into the village of Happy, Texas, where they're mistaken for a gay couple who work as beauty pageant consultants. They go along with it to duck the police, but the local sheriff has a secret of his own.
Barry McKenzie's Aunt Edna is kidnapped by Count Von Plasma, the vampire head of an isolated Eastern European dictatorship who mistakes her for the Queen of England and thinks that kidnapping her will draw tourists to his country. Barry and his mates set out to rescue her and bring her back to Australia.
Successful movie director John L. Sullivan, convinced he won't be able to film his ambitious masterpiece until he has suffered, dons a hobo disguise and sets off on a journey, aiming to "know trouble" first-hand. When all he finds is a train ride back to Hollywood and a beautiful blonde companion, he redoubles his efforts, managing to land himself in more trouble than he bargained for when he loses his memory and ends up a prisoner on a chain gang.
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.
Two young gentlemen living in 1890s England use the same pseudonym ('Ernest') on the sly, which is fine until they both fall in love with women using that name, which leads to a comedy of mistaken identities.
Two "correspondence romance" suitors prepare to meet their respective partners for the first time; mixups ensue.
In order to increase his monthly allowance, Veer lies to his stepbrother Dharm about being married. When Dharm unexpectedly arrives in Goa, he mistakes Prem's wife for Veer's. This case of mistaken identities leads to chaotic and hilarious situations.
After a young heiress is assaulted by a policeman, she seeks revenge by befriending the policeman’s mousy wife and introducing her to her circle of outrageous punk friends.
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.
Polly’s dreams of making it as an actor are shattered when her identical twin sister Amy lands the lead role in a huge TV show. Mistaken for her famous sister at every turn, Polly decides to use Amy’s celebrity for her own advantage – free clothes, free booze, casual sex… with hilarious and disastrous consequences for them both.