Flash Gordon: the ending left the door open for a sequel and the film was extremely fun. Too bad it bombed at the box office. Enter The Dragon my greatest regret of Bruce Lee's passing was that there would be no more adventures of the James Bond-like Shaolin monk agent Lee. I always fantasize about another dangerous mission of Lee aided by some other famous actors & actresses in bigger productions. Made no mistake, had Bruce lived longer we would have had a whole series of films of Agent Lee.
HELL NOO! I'm so glad they never made a sequel. It wouldn't have been nearly as good. I'm pretty sure they wasn't much demand for a sequel in the 80s anyway. It wasn't a big hit at the time. It wasn't until years later when it became a cult classic.