The Muppet Theory has been making the rounds of late, most recently on NPR's Weekend Edition Saturday. As detailed by Slate.com reporter Dahlia Lithwick, it holds that everyone can be categorized as a Chaos Muppet or an Order Muppet.

Chaos Muppets are "out-of-control, volatile," she wrote in Slate earlier this month.   Their ranks, include Cookie Monster, Ernie, Gonzo and—especially—Animal. In the real world, Lithwick, who covers the U.S.