George Clooney Changed This ER Star's Mind About Joining The Show
By Kieran Fisher
Published on March 21, 2026.
John Stamos, a star of "ER," was initially reluctant to join the cast due to his lack of knowledge about the show. He was introduced to the show by George Clooney, who convinced him to join. Stamos joined the cast as Dr. Tony Gates in Season 12. He has expressed his admiration for the show and has suggested a revival for it.
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