Richard Donner, the director who made you believe a man could fly, Danny Glover and Mel Gibson were the perfect buddy cop team, and Michael Crichton films are easy to screw up; also directed this very film. What's more, he has a cameo in the Control Room during Act III. This isn't his first cameo in one of his own films, as he's also been in several of his other films with uncredited cameos. The gentleman in the light blue sweater above is none other than Mr. Donner himself. (You get a better look at him during other segments, but this was all the Internet could provide.)