There are a couple of made for TV movies that I liked that I should mention -- not sure if they are among my favorites, but they are definitely worth watching:
"The Lathe of Heaven" (the original made for PBS, not the A&E remake)
"Between Time and Timbuktu" -- I would LOVE to find a DVD of this, and I've looked all over the place for it, but I'm not sure it actually exists. Basically, it was a movie made for PBS ages ago that kind of combined scenes, themes, concepts and characters from the works of Kurt Vonnegut. Plus, it had Bob and Ray playing news anchors (I loved Bob and Ray). I love the books of Kurt Vonnegut, which is partly why I loved the movie.
I actually once owned the published script from the movie, but I read it so often that the book literally fell apart.
And while I'm on the subject, I don't think anyone has mentioned "Slaughterhouse-Five". The book, of course, is much better, but it's not a bad translation (and it's not science fiction, but there was also a decent movie made of "Mother Night" with Nick Nolte, which never got any kind of notice whatsoever. It's not a great movie, and as I said, it's not Science Fiction. But if you love the book like I do, or love Vonnegut in general, you should see it.