The thing I appreciated most about Star Trek on TV was that it generally stayed true to science. Most of the technology in the stories had a legitimate scientific basis. Given that most people interested in science fiction are probably at least somewhat interested in science itself, it makes sense to at least try for accuracy.
I saw a recent episode of the TV series "Threshhold." The premise was that aliens have stolen powerful digital audio processor chips, to build a device which transmits an audio signal which can turn humans into super-beings. It works by "emitting microwaves." It requires massive amounts of power, yet uses no large speaker or other transducer. The bad guy rigged it up in a subway tunnel, using 700 amps of electrical current from the rails, fed through small wires into the pins of the processor chip.
Just try to count the problems with that story line!
It was reasonably well acted and produced, but layers and layers of implausible technical details ruined my enjoyment of the show. In one final insult, one of the characters was played by a white-haired Brent Spiner...the guy who played Data on Star Trek!