Joy Allison Tanner (born March 7, 1966) is an American film, television, and stage actress. She is best known for Degrassi The Next Generation (2010-2013) Life With Derek (2005-2009), House At The End Of The Street (2012) and Cold Squad (1998) Joy Allison Tanner (born March 7, 1966) is an American film, television, and stage actress. She is best known for Degrassi The Next Generation (2010-2013) Life With Derek (2005-2009), House At The End Of The Street (2012) and Cold Squad (1998)