For much of the late 1990s, he lived in Los Angeles and had minor roles. He made his feature film debut in the 1992 science-fiction adventure film "The Lost World". McCormack appeared in several television series, including "Top Cops", "Street Justice", "", "Townies", and "Ally McBeal". McCormack later gained worldwide recognition for playing Will Truman in "Will & Grace", which premiered in September 1998. His performance has earned him six Golden Globe nominations and four Emmy nominations, ultimately winning the Primetime Emmy Award for Outstanding Lead Actor in a Comedy Series in 2001.