Ghost in the Machine (1993)

Coming right on the heels of The Lawnmower Man, the 1993 film Ghost in the Machine ponders what happens when a notorious serial killer—who steals address books from potential victims and is called the Address Book Killer—gets in a car crash and happens to be put into an MRI machine at the exact same time as a lightning strike. The obvious outcome is that he dies but his brain scan is uploaded into the power grid, giving him the power to kill people with appliances. He’s also in the computer.
This movie is notable for three things. One, it has an absolutely spectacular, and utterly disgusting, kill scene involving a microwave oven and bubbling/bursting flesh. Two, it has a scene involving a babysitter’s breasts, a $20 bribe, and children that has somehow aged more poorly than the rest of the movie. Three, at the end of the movie, the Address Book Killer mutates into a being made of pure voxels or whatever. French chef kiss.