How many versions of this film have you seen?
Personally? I've seen four different versions of the film:
1. 2000 Theatrical Cut
2. Bootleg Workprint Cut
3. 2001 Producer's Cut
4. "Official" Workprint Cut
Now, the majority of people here have seen versions 3 and 4, while some of us have even seen version 1 (which sometimes plays on the Encore channel as well)... but version number 2? I obtained a copy of this during the "theatrical window" in fall of 2000, and it's actually somewhat different from the officially released workprint that came out in early 2001.
While I can't remember all of the changes, it did have a different ending. While the official workprint had Duncan pick up Connor's tradition of donating a Christmas tree, the bootleg workprint used the ending where Duncan reunites with Faith/Kate. This is also slightly longer than the producer's cut version of the ending, as instead of fading out with them kissing, the bootleg workprint has them finish their kiss and Faith/Kate walks away while Duncan is left holding her pendant.
Also, the bootleg workprint is missing the scene where Joe tries to stop the renegade watcher from shooting Duncan after he has killed Connor. It's been years since I've watched either workprint, but these are a couple of changes that leap to mind. I'll have to go back and watch them both again and see what else I come up with!