The gimmicky episodes were highly entertaining to my decidedly non-Trekkie wife. She loved the Star Trek Muppet episode ("Star Trek in Spaaaaaace") and the soap-opera episode.

As for taking the show seriously, I don't take any of it seriously. It's a telenovela, or maybe we should say Stellanovela. Most episodes build a fairly cohesive story, then break loose, and those old scientists have fun with the Star Trek universe. It's not like they're acting in a Chekhov play.

re: taking it seriously, I meant more in terms of whether it is "good art" vs disposable entertainment. On the whole, I felt that TNG and DS9 both eventually found the right balance of drama and humor, often with an intelligent underlying message about aspects of our society and culture. The modern Star Trek shows are sorely lacking in that area!