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Good Luck, Charlie is a popular Disney Channel sitcom that originally aired from 2010 to 2014. Created by Phil Baker and Drew Vaupen, the show follows the Duncan family, living in Denver, Colorado, as they adjust to the birth of their fourth child, a baby girl named Charlie. Unlike many traditional multi-camera sitcoms, the show focuses heavily on grounded, relatable family dynamics rather than high-concept sci-fi or fantasy elements (which were common on Disney Channel at the time). Most episodes revolve around a chaotic family problem set up by the parents or siblings, which Teddy has to help resolve—all while culminating in her closing video message to baby Charlie with the iconic catchphrase, "Good luck, Charlie. At the end of almost every episode, teenage Teddy Duncan (played by Bridgit Mendler) sits in front of a webcam or a digital video camera to record a message targeted directly at her baby sister, Charlie. These segments recap the crazy events, mistakes, or family chaos that happened during that specific episode, turning them into lessons or humorous warnings. Teddy realizes that because of the massive age gap, by the time Charlie is growing up and facing teenage challenges, Teddy will likely be off at college or living on her own. She creates the videos as a digital time capsule so Charlie will have guidance, wisdom, and practical survival tips on how to handle the Duncan family.