They'd probably crossover quite well, though I've yet to watch this season of Fringe. Must do that at some point. The techno babble in Fringe is of the Startrek sort to my mind, but worse. A hint of reality and a lot of babble, so not so scary to me.

There's a famous quote from, I think, Gene Rodenberry, where someone asked him how the inertial dampeners work. His reply was "very well." lol