An excerpt:
The biggest problem with this pilot movie, though, is one that would dog the TV show throughout its run, and by the time they fixed it, it was far too late: the show keeps going back to Earth. After spending the beginning of the second half with Flash and Dale on Mongo, getting captured, being interrogated, playing word games with Ming, being made into concubines, and so on, to have them then come back to Earth and deal with Flash’s Daddy issues and Dale’s relationship issues and other mundane concerns is a massive comedown because, well, those concerns are incredibly mundane, and can’t compare to visiting another friggin planet. Nobody wants to watch a Flash Gordon story that takes place in a made-up suburb, they want it to take place on Mongo.