One for the proper nerds out there, and obviously only spotted by the very engaged film geeks around the net. If you explore the Batcave, you'll find Batman's iconic T-Rex trophy, which looks like it was modelled almost exactly on the behemoth, tiny-armed killing machine from Jurassic Park (which might not be accidental). So far so not that unexpected, but if you interact with the dinosaur, it comes briefly to life, enough to let off a single roar, which is unmistakably taken from the 1998 Godzilla movie... https://www.youtube.com/watch?v=wrGIM9vagvY
