Joe Estevez is a recurring character in the On Cinema universe. He is a guest on several episodes of the review show as well as on the Oscar specials. He also stars in the Decker mini series as President Davidson.
Joe remains sympathic to both Tim & Gregg and seems to genuinely like being a part of the show. He sometimes has to step in between Tim & Gregg to make peace between the two.
Both Tim & Gregg hold Joe's acting career in high regard, and sometimes act awe-struck when talking to him despite him having numerous appearances on the show.
Joe Estevez plays himself on the show. Joe is the brother of Martin Sheen, and uncle to Charlie Sheen and Emilio Estevez.