As long as you mean nodebox, not my code - I'd be embarrassed to present this code to a newbie.
If any impressionable proto-Pythonistas are reading this: don't format your code like this! I just did it to make it short for fun. Go read PEP 8 and be enlightened http://www.python.org/dev/peps/pep-0008/ .
"Pong in 30 Lines" isn't really the interesting thing to me. I think it's far more interesting that you can write an interactive python app and embed it in a pdf.
Perhaps this would have been better submitted as "Embed python games in a pdf"?