Star Trek: Nemesis

It was generally believed that Jeri Ryan (Seven of Nine from Star Trek: Voyager (1995)) was offered a cameo in the earliest draft of the movie script, but was unable to commit when she got a role on Boston Public (2000). The cameo was supposedly given to Kate Mulgrew (Admiral Kathryn Janeway) instead. However, during a 2014 Star Trek convention, Ryan admitted that the studio had offered her a much larger role, which would have replaced an unspecified character in this film (supposedly Marina Sirtis as Deanna Troi). Ryan passed on the opportunity, not wanting to take a break from Boston Public already, and also out of fear of being typecast. She also felt that her presence in the film was merely fan service, since her character from Voyager never served on the Enterprise, and therefore wouldn't know anyone from the Next Generation crew. The studio then offered her a cameo as a guest at Riker and Troi's wedding in the beginning, which she also passed on because that would make even less sense. A cameo for Admiral Janeway was created instead, and Ryan would finally return to the Star Trek universe in Star Trek: Picard (2020).

During his confrontation with the hologram of Shinzon, Captain Picard states "Your heart, your hands, your eyes are the same as mine." While Shinzon is a clone of Picard and most of this is true because they share the same DNA, Picard actually has an artificial heart. It was established on Star Trek The Next Generation that he lost his biological heart as a cadet when he was stabbed through the heart by a Nausicaan. However, Picard's statement was meant to be more poetic than literal.

Both the letter 'R' in 'Trek' and the second 'E' in 'Nemesis' are presented backward within the words in order to introduce the idea of a mirror image.

50 minutes of fully produced but unreleased footage allegedly exists, including:

• Extended Wedding Sequence - Originally, Riker and Troi's wedding was much longer and featured Wesley Crusher (played by Wil Wheaton) in attendance. (He is still sitting next to Dr. Crusher in the theatrical version) Also during the wedding, Picard opens up to Lt. Commander Data and reveals his dismay over being a private loner all his life.
• The Seduction of Counselor Troi - In the original three-hour version, Shinzon's obsession with Troi runs much deeper and there are several scenes that show him seducing and tormenting her in her mind. A scene featured in the theatrical trailers show Troi struggling with the mind meld inflicted by Shinzon and his Viceroy. You still see the effects of the torturous mind meld in the theatrical version as Troi appears fatigued and psychologically drained.
• A scene of Data teaching his brother B-4 how to eat with a fork.
• Ambassador Worf and Dr. Crusher were also featured more prominently in the three-hour version and it was revealed that Worf was on his way back to Kronos after leaving Deep Space Nine and he was featured in more action sequences that were deleted from the theatrical release. Dr. Crusher is revealed to be considering leaving the Enterprise after receiving an offer from Starfleet Medical.
• Footage of Geordi and Data planning and executing the mission to rescue Picard on board the Scimitar was also deleted and featured the swapping places of Data and B-4.
• Extended ending - Riker and Troi board the USS Titan as he takes command as Captain and she resumes her job as ship's counselor. The instatement of a new First Officer on the Enterprise is shown. Picard bids farewell to Dr. Crusher as she accepts the offer from Starfleet Medical and leaves for San Francisco.