He-Man 2
Back in the 80's, after the success of the first He-Man film (Masters of the Universe) a big budget sequel was planned. It was going to be shot back to back with a brand new Spider-Man movie, the only problem was that the huge budget was already running out. To make a bit of extra cash to help fuel both projects the director (Albert Pyun) quickly wrote the screenplay to the film 'Cyborg' over a weekend, with the awesome Chuck Norris penned in for the lead. Unfortunately Chuck was under contract with another studio so newcomer Jean-Claude Van Damme was cast in his place. Cyborg was a huge failure and resulted in both the He-Man sequel and Spider-Man movie being canceled. It was probably for the best in the long run although I'd love to see a Chuck Norris version of 'Cyborg'!
Coincidentally, the film Cyborg has been known as 'Masters of the Universe II: The Cyborg' on American TV!