Note there's a lot of other info in there that's not strictly tied to US debt: Wall St. bonuses in '09 ($115 billion), WalMart's revenue ($405 billion), what it would cost to save the Amazon ($21 billion), and annual donations to charity made by Americans ($308 billion).
Enough randomness to make the name of the video deceptive (if catchy). It also kinda sucks that lines never vanish (but maybe that's the point).
There's also a UK version:
All told, it makes okay* advertising for Information is Beautiful, which aims to illuminate the hivemind - one data visualisation at a time.
*Yeah, just okay.