Sequels to films that never were

[Cadaverous Pallor]

The upcoming Burton's Alice, so far as I've let myself read, involves an older Alice who comes back to Wonderland. (I may be wrong - I'm avoiding spoilers as much as possible.) This in effect makes it a sequel to a film that never was. Yes, there have been plenty of Alice films, but stylistically nothing like Burton's vision.

This brings to mind two movies - Hook and Return to Oz. Also, sequels to non-existent films. For the record, I love both of them.

Are there more?

Superman Returns doesn't really count. The actors channeled their predecessors so well, I think it actually counts as a sequel. Sure, they nuked the fridge a few times, but nothing can touch Superman IV in that department.

The newest Star Trek is an interesting one and can be argued from many angles...though the ideas that win out are that Nimoy is actually in it, and that the "reboot" concept is completely different.

More?