When Hal is about to pull the plug on Keyboard, Keyboard types "It's OK, I Love You". Later when Hal is shot, the monitor changes to "It's OK, Dad, I Love You"
Luke shoots at the SWAT team members numerous times, but doesn't reload the gun.
During the operation that plants the computer in Luke's head, they show him sitting up and the doctor working through the back of his neck. When the scene switches to a "security camera" view, they use stock footage of a totally different operating room with a lot more people and the patient lying down and completely draped.
The DVD box cover for the movie shows Val Kilmer with neat short hair but in the movie he has a long and untidy hairstyle..
In heat-map rendered surveillance footage at Hope Industries, overlaid text contains the misspellings "survalence" and "apartemnt".