Tammy and the T-Rex

An evil scientist implants the brain of murdered high-school student Michael into a Tyrannosaurus. He escapes, wreaks vengeance on his high-school tormentors, and reunites with his sweetheart Tammy.

Tammy and the T-Rex is a 1994 sci-fi comedy movie directed by Stewart Raffill, starring Theo Forsett, Ellen Dubin, Denise Richards. It holds an IMDb rating of 5.4/10 from 6,721 votes and runs 1h 22m.