The best and worst examples were in the same movie, IMO: Nedry's finger-wagging admonishment and all hell breaking loose, then later, "it's a Unix system, I know this!" and some exotic file manager visualization.
Mr Robot has some decent hacking scenes. At least they put up prompt windows with commands that are generic enough to not be hackTheGibson.exe type lame.
I used to work with a couple of the guys who consulted on the technical aspects of Mr Robot. From what I recall, the general idea was to use realistic hacks, but speed through the boring parts to keep the show interesting.
Are you thinking of the one shown in Jurassic park? The scene in hackers was much more CGI, and while I don't doubt it was inspired by fsn, I'd be very surprised if it actually was fsn.