What American actor, voice actor, comedian, producer, director, writer, singer, and activist guest starred in Idiots Are People Two!?
Idiots Are People Two!:  Guest stars in this episode include James Marsden, Kelsey Grammer, and Denise Richards. Kelsey Grammer: Allen Kelsey Grammer (born February 21, 1955) is an American actor, voice actor, comedian, producer, director, writer, singer, and activist.
Kelsey Grammer