Life with Derek is a Canadian television teen sitcom that aired on Family Channel (English) and VRAK.TV (French) in Canada and on Disney Channel in the United States. The series premiered on Family on September 18, 2005, and ran for four seasons, ending its run on March 25, 2009. Reruns aired on Family Channel until its closure in 2025, and previously aired on multiplex sister channel Family Chrgd. The series stars Michael Seater as the titular character and Ashley Leggat as his step-sister Casey. These are the two oldest children in a stepfamily.