John Michael Higgins portrays David Letterman, the iconic late-night talk show host.
Daniel Roebuck plays Jay Leno, the comedian and television host, known for taking over The Tonight Show.
Kathy Bates embodies Helen Kushnick, the powerful talent manager and producer.
Bob Balaban takes on the role of Warren Littlefield, the network executive at NBC.
Ed Begley Jr. portrays Rod Perth, the president of the NBC television network.
Peter Jurasik plays Howard Stringer, the former president of CBS Broadcast Group.
Reni Santoni embodies the character of John Agoglia, a television executive.
John Kapelos takes on the role of Robert Morton, the executive producer of Late Night with David Letterman.
Steven Gilborn portrays Peter Lassally, the long-time television producer and manager.
John Getz plays Brandon Tartikoff, the former NBC executive responsible for developing hit TV shows.
Lawrence Pressman embodies Bob Wright, the former CEO of NBC.
Sandra Bernhard portrays herself, an American actress, comedian, and singer.
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