More of him came from my step-dad, who is now passed away. The initial creators of the show kind of based the character on their dads and then I added my dad.

Before That '70s Show his other roles included playing Mr. Sue on Fox's "espionage comedy" The New Adventures of Beans Baxter from 1987-89. Smith has said that he is likely the only Kurtwood.

He also starred in the seventh season of 24. He is best known for playing Clarence Boddicker in RoboCop and Red Forman in That '70s Show and for his appearances in the genre of science fiction (Star Trek The X-Files).