Bicentennial Man

In this science-fiction film directed by Chris Columbus, Williams stars as an android robot that over a 200 year span becomes increasingly human-like. The movie is based on the novel The Positronic Man, co-written by Isaac Asimov and Robert Silverberg. On wearing a robot costume for most of the shots:

It’s very strange. Everything from where your feet make contact with the ground to the way you move your hands, it’s all dictated by the suit. Once they encase you in it, it’s a bit like being in heavy makeup–you’re kind of freed by it. It defines who you are. Once you realize that, then you try to push the limits of what you can do in it.