Little Hawk,As you probably already know, the reason there were a "few interesting plots" on the first Star Trek series is that several of the major science fiction/fantasy writers had a go at scripting an episode or two. If you still can get it in reruns, check the credits sometime--some very famous names are included there.
My favorite T-shirt says, in shaky green letters, "He's DEAD, Jim. You take his tri-corder, I'll get his wallet."
You'd be amazed how many young people I have to try to explain that to!
Lin