Old Shame: Tom Hardy said that this film (and more specifically, the fact that it was a critical and commercial flop) was the worst thing that ever happened to him, and nearly killed his career before it got off the ground. To this day, he still refuses to talk about Nemesis in any significant detail. LeVar Burton, Marina Sirtis and Gates McFadden have also made no secret of the fact that they hate this movie.
What Could Have Been: Apparently, more than a third of the film (including most of the character moments and a great chunk of the expository dialogue) was cut before the final release.
The earliest version of the script was written so that Patrick Stewart would have been playing both Picard and Shinzon, and the final battle between the Enterprise and the Scimitar took place in orbit of Earth.
In addition, a later draft had the small armada waiting on the Romulan boarder joining in on the fight to have a six on one fight.
NicholasMeyer was originally offered the director's chair, but turned it down because Rick Berman wouldn't allow him to make any serious changes to the script. LeVar Burton was also considered as director, but Paramount went over Berman's head and installed Stuart Baird as director.