Original 1994 Fantastic 4 movie

Constantin Films owned the rights to a Fantastic Four film but, by late 1992, they stood to lose those rights if they didn't make a film by the end of the year. So, they shot Fantastic Four in one month for under $2 million. From the get go, the producers knew it would never actually see the light of day, but they never informed the director or actors of this fact, so they all went out and talked to the press and signed autographs and promoted the movie, which is the saddest thing in the history of the movie business.

* Pinched from Cracked.com