The fight sequence of Neo versus Smith and his clones (a.k.a. The Burly Brawl) took 27 days to shoot.
The Wachowskis' contract for doing Matrix Reloaded (2003) and Matrix Revolutions (2003) included a stipulation that they wouldn't have to do any media interviews.
Around 97 percent of the material from the film sets were recycled after filming. For example, tons of wood were sent to Mexico to build low-income housing.
GM donated 300 cars for use in the production of the movie. All 300 were wrecked by the end.
The role of Seraph was written specifically for Jet Li. Reportedly, Jet Li asked for the same amount of money that Keanu Reeves was getting to do the film. The role was then changed to a female and offered to Michelle Yeoh, who turned it down due to scheduling conflicts.
Bill Pope: The director of photography makes an appearance as a security guard who gets paid to count sheep.