To keep his sanity, Joel crafts sentient robot companions, including Tom Servo, Crow T. Robot, and Gypsy, to keep him company and help him humorously comment on each movie as it plays, a process known as riffing. Each two-hour episode would feature a single movie (often edited for time constraints), sometimes preceded by various old shorts and educational films, with Joel, Tom, and Crow watching in silhouette from a row of theater seats at the bottom of the screen.
It's a show called Mystery Science Theater 3000. It's about someone stuck in space by evil scientists and forced to watch bad movies with his robot companions (played by puppets). The show is made up mostly of them watching the movie with only their silhouettes in the bottom of the screen as they make fun of the movie, like in the comic, with occasional segments where they leave the theater and usually do some kind of skit related to the film.
It's kinda corny but it's a fun show. They have a channel on YouTube where they upload some of the episodes and play others live, and an app where you can watch most of them ad-free.