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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.

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.

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.

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.

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 inept courier realises he has been used by criminals to deliver money. On the run from both the criminals and police, he poses as a Scout leader and leads a scout group on a hike through the mountains.

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.

It's been ten years since the paths of René and François parted ways. From the glorious era when, as cops, they roamed the Montmartre district, they only have a handful of memories left, the money from their cronies having evaporated over time. Everything comes to an end. Until it starts again.

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.

When practicing for a role, actor Jack is mistaken for the killer Ace. He doesn't realize this until it's too late and is carried off to gangster boss Leo Smooth, who wants Ace to do a job for him. Fearing for his life, Jack plays his role, but always searching for a way out of the well-guarded house.

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.

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.

An American gets a ticket for an audience participation game in London, then gets involved in a case of mistaken identity. As an international plot unravels around him, he thinks it's all part of the act.

Jon and Garfield visit the United Kingdom, where a case of mistaken cat identity finds Garfield ruling over a castle. His reign is soon jeopardized by the nefarious Lord Dargis, who has designs on the estate.

A rideshare driver gets mistaken as a getaway car by two bank robbers. To survive the night, she'll need to act the part.

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.

A shoe salesman and a tailor respectively fall in love with two sisters, Yuk-sin and Yuk-ling, both reputed singers on the radio. The men devise various schemes to meet the two women. Fourth Aunt, the sisters' mother, treats the two women as commodities to be traded off to the highest bidder, greedily making money off their talents by arranging lucrative concerts. The shoe salesman and the tailor disguise themselves as rich men to get close to their dream lovers. Finally, the sisters are won over by true love.

Following his release from a seven-year stretch in prison, Mario Diccara discovers that his affairs with the underworld aren't completely settled. His brother Patrick, a priest, suggests that he stays with elderly Father Etienne in a small village in Ardeche until the conflict blows over. But their plan takes an unexpected turn when Father Etienne dies.

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.