Just watched A Beautiful Mind on the TV. I had no idea Russell Crowe could actually act! I was very impressed. His accent was godawful, but even that didn't take away from the believability of his character.
Imagine discovering, years later, that your roommate from graduate school was a hallucination. Jesus.
I realized at the end of the movie that I actually knew of John Nash's work from evolutionary biology. It is far-reaching stuff. I just didn't realize the Nash Equilibrium was the same Nash. Wasn't paying enough attention in class, I guess!