You could easily program a week-long film festival with sci-fi movies about virtual reality. There's "Tron," of course. The 1982 version still holds up, and the 2010 remake isn't bad if you turn off the picture entirely and just listen to the great soundtrack by Daft Punk.
Some other VR movies on the short list: "Brainstorm," "Total Recall," "The Lawnmower Man," "Virtuosity," "The Thirteenth Floor," "Vanilla Sky," "The Cell" and the severely trippy "eXistenZ." You could make the case for "Jurassic Park" and "Inception," too. If you want to keep up on real-world virtual reality news, bookmark the busy news site Road to VR.