Signing Time Addict

My baby is a Signing Time Addict! If we are in the house, he begs me with his sign language to let him watch Baby Signing Time, near the end of the DVD, he starts asking again, for a new DVD. He dances to the songs, laughs if I sing them, learns new signs every day. This is a great product, but I am actually concerned that he is addicted! and who said signing babies don't have tantrums, while they can sign what they want "more baby signing time", if I don't play it for him....you guessed it! But really, signing does alleviate a lot of frustration that comes from not being able to communicate. Anyone else with Signing Time addicts?