This is the one with the biggest cult following and what people usually remember Scott best for. A very creepy made-for-tv movie that was even remade in France! This was based on the book by Jack Vance. Warner Archive now has it available on DVD.
I love this movie. I saw it when I was a kid. Scott Jacoby was only a few years older than me, so I could really relate to his character. He really caught the essence of the outsider alienated from society. One of the best television movies ever.