Alien 5? Will it happen? With Sigourney? Or was Alien vs. Predator the prequel answer to that movie not happening? What is Alien 5 going to be about if it was done? I heard that Sigourney said she'd do it if the story was good.
Starship Troopers 3 anyone? No. 2 wasn't actually bad. It was a pure military hell movie, but watchable for this straight-to-video flick by Dennis Murren of Star Wars fame.
Total Recall - wasn't there supposed to be a sequel, with Arnold, and Johnathon Frakes directing? What happened?
BladeRunner 2 - was this done? There was a book I think. Would Harrison Ford come back? Was Decker in the sequel book?
Waterworld - could a sequel work? I really liked this movie. What would a sequel be about?
Terminator 4: the Future Wars. Who'd play John Conner? Is Arnold not needed? (he's a little busy right now)
Independence Day: - what happened after the ships were crashed? All the aliens didn't die. I once heard there were plans...
Men In Black 3: - likely and possible. These are fun. They can keep making them but they better stop giving away the best gags in the previews. The previews should show nothing really. The movie franchise is established enough now. I want to be surprised and laugh. The subway worm and more were already shown before I ever went into the theater - as were all the aliens working at the post office.
Godzilla - yes the Iguana one with Matthew Broderick. I liked this movie a lot and got what I wanted out of it. Would another movie work? How about doing it in Japan with an attack on Tokyo but showcasing a lot of Japan's more exotic locations to make it stand out against all the fake-dino-films of the past done in Japan.
Jurassic Park 4 - I guess they really ARE doing this. The only cool idea is that they try to destroy all the life that shouldn't exist on that island and undo what JP1 / 2 started since the dinos are so dangerous. Anyway, are Goldbloom and Grant both going to be in the flick? That's what I heard before. That'd be good, but the story behind why their characters are still going to that island had better work.
Indiana Jones 4 - so is it happening? Star Wars 3 is almost a wrap. Harrison's not getting any younger. What is it about? Is it going to be Atlantis as was once rumored? What were they going to do? Have Indy F The Little Mermaid?
Gettysburg - after the prequel Gods and Generals was made with the cast, there was supposed to be a sequel to finish a trilogy - and Ulysses S. Grant was supposed to be the star character that finally forces General Robert E. Lee to surrender and become the namesake for the Dukes of Hazzard's car. Sorry, but I dig these Civil War movies - especially considering how many actors they get to play the war scene drama out with.
So what do you want sequels to?
What don't you?
Any one-movie-wonders I failed to mention that you'd want to see?