Simon è un giovane e timido uomo, confinato in un'esistenza isolata in un mondo indifferente. Surclassato al lavoro, disprezzato dalla madre e ignorato dalla ragazza dei suoi sogni, non riesce a cambiare nessun aspetto della sua esistenza fino a quando l'apparizione del suo alter ego James non ne sconvolge gli equilibri. A differenza di Simon, James ha carisma, è ben accolto da tutti e ha successo con le donne. Lentamente James si impossessa della vita di Simon e Simon scivola in un incubo dal quale è incapace di risvegliarsi.

Quando l'intera famiglia reale inglese muore accidentalmente, si scopre che l'erede al trono è un certo Ralph Jones, pianista di Las Vegas, frutto di un amore clandestino del Duca di Warren. A insegnargli il mestiere di re ci pensa il segretario Willingham, ma Ralph proprio non è adatto. Anche il suo flirt con una ragazza che di mestiere fa la striptease non s'accorda molto con il fatto che, per ragioni di stato, lui dovrebbe sposare una principessa finlandese.

Pursued by the big-time gambler he robbed, John Muller assumes a new identity—with unfortunate results.

Con un crudele tranello alcune spie nemiche riescono a imprigionare un agente segreto americano. L'uomo viene rimpiazzato con un sosia perfetto: nemmeno le persone a lui più vicine comprendono l'inganno. L'agente riesce a liberarsi e a raggiungere il rivale; alcune incaute parole di quest'ultimo inducono i compagni a identificare l'autentico collega.

The movie takes place during WWII. A dashing British RAF Officer is earmarked for a secret mission behind enemy lines in occupied France, but wishing to distract the enemy, enlists a person to double for him and thereby draw attention to North Africa . An unlikely airman is found and tutored in the ways of an English officer.

Durante una missione spaziale, l'astronauta Tom Trimble ed il suo clone, l'androide Hermes, vengono accidentalmente inviati nel passato, ossia nel periodo del regno di Artù. Dopo essere diventati amici del sovrano, i due tentano di fermare le macchinazioni del mago Merlino e del perfido Mordred.

Siamo in pieno Medioevo. Dagobert, re dei Franchi, va in pellegrinaggio a Roma, per chiedere perdono al Papa della propria vita dissoluta. Gli intrighi romani hanno però messo sulla cattedra di San Pietro un sosia del vero Papa; Dagobert se ne accorge e smaschera l'usurpatore, ma sulla strada del ritorno viene ucciso a tradimento dal suo consigliere, il monaco Otarius, assetato di potere e corrotto dagli ozi romani. Insieme a Ugo Tognazzi c'è il compianto Coluche, comico di grande talento e osannato in Francia, che però non ha mai ottenuto il meritato successo in Italia. Scenografie di Dante Ferretti. A parte ciò, va anche detto che il Medioevo non è nelle corde del nostro Dino Risi.

A loner of a student begins being approached by random people who act like they know him, leading the student to discover that he has a dopplganger.

A Bronx working girl is drawn into an elaborate extortion plot after being kidnapped by a gang of sophisticated con men who force her, because of her remarkable resemblance, to impersonate a wealthy socialite. Based on E.V. Cunningham's (Howard Fast's) novel, "Shirley."

Penrod Schofield's mischievous dog, Duke, is falsely accused of biting Penrod's spoiled friend, Rodney.

A risk averse insurance actuary's life is turned upside down when his pleasure seeking mirror image id switches places with him in order to show him how to live.

Un giovane parigino, innamorato follemente di una donna affascinante e ambiziosa che si prende gioco di lui, si arruola nella Legione Straniera...

The ambitious Betsy is happy: she gets promoted to a leading management position. Her happiness is spoiled only a little by problems with a boyfriend who feels neglected and an harassing boss. She realizes much too late that her secretary Norma is after her job and step by step tries to ruin her career and private life.

In Moscow 1953, four terrified women prisoners are brought before Joseph Stalin, who chooses the beautiful Dasha. He punishes her by shaving off her long hair. Moments later, a plastic surgeon leads Stalin into the operating room and transforms his face so that he is unrecognizable. He vanishes, but OSS agent Steve Anderson searches for him in Europe.

The Portorican prime minister asks British detective Sherlock Holmes to find a twin for King Fernando XXIII, a weak and frightened man who fears anarchists and does not want to show himself in public. Holmes finds in the Czech newspapers a photo of the perfect double, František Lelíček, a daring bon vivant drowned in debt, so when Holmes offers him money, Lelíček decides to travel to Portorico and play the role.

Yu Kwok-Kei cannot pay his debts and disguises himself as Ma Ka-Wai, his cousin Yu Lan-Fun's fiancee. He tries to kill Lan-Fun. A fisherman saves Fun. She believes that Ka-Wai was the attacker, but she can't understand why. After Fun has been missing, her family puts an announcement in the paper. Meanwhile, Chan Lan-Fong, who just comes to Hong Kong, looks like Fun and is brought to Yu's home. Fong's habits are totally different from Fun's, and she cannot recognise the family, who thinks Fun has amnesia. Fun knows that her family has mistaken somebody else for her, so she goes back home secretly and teaches Fong her habits and customs. Fong does what Fun tells her, and the family thinks that she has recovered. Kwok-Kei has a guilty conscience, so he disguises as Ka-Wai again, intending to kill Fun/Fong. But he fails and got arrested. Everybody learns that Kwok-Kei wanted to kill Fun. Moreover, Fun's mother discovers that Fong is Fun's lost twin sister and the family is reunited.

A disillusioned college employee and aspiring writer discovers a woman virtually identical to herself in a press article about the winner of a prestigious prize.

When his roommate announces a plan to move away, a wannabe screenwriter attempts to balance crafting his hard-to-explain new story and a realistic plan for his own future. After a sleepless night and a strange trip into the forest, those lines begin to blur.

A well-known film director has a gangster double, whom he ends up killing. Taking the gangsters place, he then causes an actress to be framed.

A writer (Ruy Gatti) arrives to an unoccupied house where he hopes to find inspiration. He places the typewriter on the desk and takes off the sheets covering the furniture. Among them, an old mirror in which he sees his own reflection. He couldn't imagine that that little gesture would seal his fate.