TCM already had scheduled an Essentials, Jr. night devoted to “Down to Size” before the recent death of writer Richard Matheson, whose imagination spawned an astounding list of beloved movies and TV shows. (For my list of his TV greats, see Bianculli’s Blog.) Even so, the night begins with his seminal contribution to the “shrunken drama” genre: 1957’s The Incredible Shrinking Man, starring Grant Williams as a man who finds himself getting smaller and smaller, and facing danger and death from formerly benign objects and pets. Williams’ fine performance in this movie proves the adage that there are no small parts, only small actors.