Stuck on You is a 2003 comedy film directed by the Farrelly brothers and starring Matt Damon and Greg Kinnear as conjoined twins, whose conflicting aspirations provide both conflict and humorous situations, in particular when one of them wishes to move to Hollywood to pursue a career as an actor.
Walt gets a role in a local play. Bob stays as much as possible in the background, as he has a tendency to get stage fright. Following the plays success, Walt decides to follow his dream to Hollywood and persuades his hesitant brother to go along for the ride. They rent an apartment in California and become friends with fellow aspiring actress April Mercedes. When she expresses curiosity about their conjoinment, Walt explains that they share a liver that is mostly Bobs, and that because surgical separation entails a higher risk to Walt, Bob would not consent to the surgery, even though Walt favored it. It is also the reason why Walt appears somewhat older than Bob. Greg Kinnear is seven years older than Matt Damon in real life.Walts efforts to find acting work in Hollywood are fraught with difficulty, and his agent, Morty OReilly, is little help, offering at one point to get him a job in a pornographic film. Cher is upset that she has ended up starring in a primetime TV show called Honey and the Beaze. She wants out of the deal, so she decides to hire Walt as her costar since her contract states she can choose anyone she wants, certain the show will get cancelled. The producers, realizing Chers scheme, foil it by going forward with the production, compensating for Bobs presence by keeping him out of the camera frame and employing bluescreen effects. The show is a surprise hit and Walt becomes famous. ........
Source: Wikipedia