Ever read a book and you want to tell others about it so they can read it? Ever read a book and you want to tell others about it so they don't read it? Same thing for movies, tv shows, music, food, etc.? Well do it here. Rant, rave, but be informative. Be passionate about the things you like and truly hate the things you don't like. Defend your views. Convince us to like what you like.
And yes, Gerald, you can write a review of every single Star Trek episode. In fact, it is encouraged. Even cite A/C repairmen as sources.