Peter Michael Bergman (born June 11, 1953) is an American actor best known for his portrayals as Dr. Cliff Warner on All My Children (1979 -- 89) as well as Jack Abbott on The Young and the Restless (1989 -- present).

Answer this question based on the passage: who plays jack on the young and the restless? OK. Let's think. My stream of consciousness:
The important part for answering this question is: Peter Michael Bergman (born June 11, 1953) is an American actor best known for his portrayals as Dr. Cliff Warner on All My Children (1979 -- 89) as well as Jack Abbott on The Young and the Restless (1989 -- present). The answer is Peter Michael Bergman.