This is going to be the most surprising movie ever made!
The climax of the movie will be when Kenny Dantley wakes up from his 40 year coma to discover that his girlfriend Vanessa died when he totaled the Stingray he rebuilt in his high school shop class. His mind induced the coma to help him deal with the guilt he bears as a result of her death.
He has spent the last 40 years hallucinating that he was a mediocre actor named Mark Hamill trapped in a long term contract forcing him to be in a series of never ending sequels of a terrible movie franchise.
He finally wakes up when he deals with the guilt. Additionally, he finds that everyone that he interacted with in his coma were actually staff in the nursing home. Darth Vader is actually the orderly who catheterizes him. Chilling stuff.
This is the story of a mans struggle for consciousness. A true tear jerker!
Actually, what you wrote would make a good Saturday Night Live skit. Does anyone watch SNL anymore?