Ok, I am writing this review in response to the bad review written by Bill which I don't believe this series deserves. "Weird Science" is one of the BEST TV series ever made and is definitely my #1 favorite show of all-time and will always be! I like the Cast from the series a lot better than the cast in the movie and think Lee Tergeson makes a better Chett than Bill Paxton, Vanessa Angel is definitely a lot better as Lisa than Kelly LaBrock, and in addition prefer Michael Manasseri and John Mallory Asher as Wyatt and Gary. Plus, Bruce Jarchow as Principal Scampi is brilliant. Bruce adds A LOT of comedy to the show, and such is why "Honey, I Shrunk the Kids: The TV Show" is also a very good show.
You have to take into account the BIG time span between the Weird Science movie and the tv series, before you start saying anything about the movie or the series. There is a whopping 8 - 9 years between them. Therefore, the movie will undoubtably always appeal to people over the age of 25 or 26, and the series will always undoubtably appeal to anyone under the age of 25. It also depends on which you see first as to which you will like. If you see the series first, you will most likely like that and not like the movie as much, and vise versa.
I personally do not care for the movie at all and will always watch an episode or 2 of the Series whenever I want some "Weird Science". I own the movie as well, but may never watch it again as I just don't care for it. I absolutely LOVE the tv series, though, and really wish USA Network continued it for Season 6. It was one of their most popular shows, too, by the way.