Norman Lear could do no wrong when it came to producing TV greatness. He's known for such legendary shows as "All in the Family," "Sanford and Son" and "Good Times." However, one of Lear's longest running series -- "One Day at a Time" -- sometimes gets overlooked. Take a closer look, however, and you'll see that this '70s series stands on its own and managed to keep fans tuning in for nearly a decade. Take our quiz to see how much you know about this classic sitcom!