He starred as Donald in the film Lady in White and as Billy in the movie Big in 1988. Rushton starred as Ron Thompson in the movie Honey, I Shrunk the Kids in 1989 and as Clyde Parker in the film Pet Sematary II in 1992. He had a recurring role in the television series Roseanne as Chip Lang from 1988 to 1989 and as Wesley Buttons in the TV mini-series Dead Man’s Walk in 1996. Rushton was nominated for two Saturn Awards and four Young Artist Awards.