Silent Fall

Tim's aversion to round things is due to his allergic reaction to meatballs, causing his autism. He is, in fact, Robin Williams, but is trapped inside a child's body, though without any decline in his vocal talents. Arwen's elfish potential crashes on the shoals of righteous violence, leaving Dr. Rainer, ze shrink, to ponder, "I sink, zerefore I am".

In the end, Groucho, Ms. Hamilton (Margaret, that is) and Robin Williams go on a candy-seeking expedition. A treat: we get to hear Robin's real voice.

I had never heard of this movie until my hated aunt gave it to me for Christmas.