It does look like that Who cover, though I was never wild about the Who cover (or that album.) I had never heard of Harry Harrison or that book before reading the Ebert review, which I don’t think I read back when I first watched SG (it was a positive review, which I hadn’t remembered.)

12 Monkeys hasn’t been forgotten, but Gilliam was a hired gun on that movie more than an “auteur,” a bit like Brian De Palma on Mission: Impossible. It’s generally well received and all, but Time Bandits is more “Gilliamesque.” Also TB got a Criterion, though I’m not sure I should keep bringing that up as some kind of watermark. Landmark? What am I saying here…? You did say “outside of film buff circles,” though and I guess 12 Monkeys got that streaming TV series, but I don’t know how successful that thing was.

I didn’t know Nancy Cartwright was in the Twilight Zone movie, but that’s not as weird as her being a $cientologist and acting on a show that did that “Movementarians” episode, which was pretty clearly an attack on $cientology. If the Simpsons had parodied the show’s version of Nightmare At 20,000 Feet and not the movie’s version, we’d probably have gotten a bad Shatner impression.
Your opinion of which TZ: The Movie sequences are good and bad, IIRC, is the exact same as Ebert’s.

I’d never heard of Damnation Alley, which seems to me like a really stupid version of Sorcerer, which probably got buried by Star Wars at the box office in 1977 (I said “probably” nad not “certainly” because Sorcerer was released a whole month after Star Wars, but then again SW really was that big of a phenomenon I guess…what went up at the box office against Titanic in Christmas 1997? I can’t remember.)
I know Mad Max wasn’t out yet, but you’d think in 1977 people still would have wanted to put a biker-trucker fight in a movie. And, uh, a Mad Max/Snake Plissken type hero–again, those characters didn’t exist yet, but aren’t they basically both just Clint Eastwood?