Scrubs

Scrubs is a medical-themed sitcom which debuted on NBC in 2001, focusing on three interning doctors and their adjustments to the pressures of hospital life, as well as their interactions and rather eccentric superiors.

As an example of cross-promotion, Scrubs was one of several NBC series referenced in It's a Very Merry Muppet Christmas Movie, which debuted on that network. After quitting her job at the Muppet Theater, Miss Piggy is found on the set of Scrubs. However, Piggy is not a star, not even a guest star, but an extra, playing a dead body. Series regulars Zach Braff, Sarah Chalke, Judy Reyes, John C. McGinley, Neill Flynn, and creator/producer Bill Lawrence appeared as themselves.