I am an avid Sponge Bob fan, although I don't get to watch it as much as when my kids were younger and I wasn't a Dean. And I don't doubt that a kid would have a hard time focusing after watching Sponge Bob. Sponge Bob is like eating chocolate or drinking a Coke, except in relation to the brain rather than the blood stream.
Here's my question. If you had those same students do some task that involved creativity or ingenuity right after watching, would they do better than that kid using crayons? And how do those same 4 years turn out in later life? Will they prove to be faster thinkers or better innovators in the end because their cortex was more stimulated as a child?
Obviously I'm not competent to say and there are no studies of this sort yet. But the genie is out of the bottle. Sponge Bob and his equivalents are here to stay.
P.S. I hope no colorers were offended by this post.