Which Arnold Schwarzenegger film features actor and game show host Richard Dawson in a supporting role?

The Arnold Schwarzenegger film which features actor and game show host Richard Dawson in a slick supporting role is "The Running Man". He plays the role of Damon Killian and is the main antagonist in the 1987 film "The Running Man".

As the host for the "Running Man" game show, Killian through manipulation, fraud, and deceit manages to control Ben Richards (Arnold Schwarzenegger) in the show together with his friends. When the fraud associated with the show is fully exposed to the public, Killian will be killed while playing as a contestant in the "Running Man" game. It is Ben who executes Killian publicly on live TV during the show. Richards is made a national hero by massive public crowds for doing what he does to Killian.