Sci-fi gets to its most embarrassing when it pretends to have an actual basis in fact.

It's often notable that the best sci-fi steers itself clear of any real talk of science... Heroes doesn't have people trying to explain the superpowers - people express amazement that they violate the laws of physics with such ease but no one ever starts using big made up words to try and explain it. Neither did Farscape or Babylon 5... and Battlestar Galatica hasn't either. BSG never really tries to explain anything. Hell, they had an episode where their never explained FTL drive got broke and all that was involved in fixing it was pretty much like changing a fuse.

Star Trek... well, as it progressed - it just got embarrassing. By Voyager the script was just dominated by meaningless Treknobabble... some of it actually impossible... expressing the power output of something in Dynes? Wasn't that show supposed to have a science advisor? It seems unlikely he had more than a subscription to New Scientist... although the closest they probably got to reading it was using it as a coaster. Furthermore, beyond simply becoming a significant proportion of the dialogue, the jargon actually became a plot point that allowed the writers to avoid any kind of thinking or originality. Bad guys got you down? Get one of your bridge staff to reel off 15 nonsensical science sounding words and BAM! You killed them.

Of course, it's clear that they did actually learn from their mistakes in this case because Enterprise was clearly a setting envisaged to avoid the kind of babbling previous treks had become synonymous with. Of course, that meant there was only about half as much dialogue in there and they had to introduce the obligatory catsuit in the first episode. More on that later.

Stargate SG-1 became increasingly guilty of treknobabble as it got more worn out. Was there any need to have Carter spout out gibberish every so often? Actually, there was... that's about all she said... and given that the format of SG-1 dialogue was generally:

O'Neill - flippant comment.
Carter - treknobabble.
Jackson - simple summation and conclusion.
Teal'c - Indeed.

The obvious change when Ben Browder came onboard was this.

Mitchel: pop culture reference.
Carter: treknobabble.
Jackson - simple summation and conclusion.
Teal'c - Indeed.

SG-1 probably thinks that because they acknowledged that their treknobabble was frequent and gibberish - generally by O'Neill raising his eyebrow and looking like he'd rather be in a vat of boiling acid. That doesn't change the fact that they became increasingly Voyager like in its usage... transiting from explanation to plot point.

It probably isn't coincidence that the shows that babble on and on about pseudo-science nonsense are those of inferior quality aimed at dullards who will watch anything with tight tops and explosions every thirty seconds and those that don't tend to be the more critically acclaimed and just plain better.