The UNIX scene was funny and probably included because of some marketing arrangement with SGI. I haven’t seen mentions of UNIX in other movies.

For context: in Jurassic Park, there is a scene where a 12-year-old girl sits in front of an SGI workstation to deactivate some doors (or similar) and says, “I know this! This is UNIX; it’s easy”, and uses a 3D UI to navigate files. At that time, an SGI workstation was very expensive and not something you could learn at home, and UNIX-like OSs weren't as common. The scene was like someone saying “I know this it’s a nuclear reactor, it’s easy”