urgh, I hated working at centers too! That's why I opened my own daycare!
On TV - I have it on for an hour in the morning (as I have some who cry from separation anxiety, and this keeps them calm), and sometimes just when I'm making up lunch or just before nap. If it's raining, we get a movie day. But 3/4 of my dcks don't actually watch the show, they seem to enjoy the background noise...