For many seasons on the '80s sitcom "Growing Pains," Jeremy Miller played the adorable, blonde-haired little boy of the Seaver family whose antics often got him into trouble but didn't put a dent in his lovability. Then he grew up.

As Miller went from cute kid to awkward teen, "Growing Pains" was experiencing some changes of its own -- from casting adjustments to a reported decline in ratings. Then, in its final season, a young, unknown actor joined the show. His name was Leonardo DiCaprio.