Plenty of Adventure Time episodes go off the rails with impenetrable lunacy. But the plot-advancing episodes packed a truly emotional punch and established the Ice King as possibly the most interesting cartoon character ever. It's also testament to the brilliant character design on the show that such original creations translate well to the real world. Indeed, I'm morbidly excited to see the first Destiny Gang cosplay:
You can see more of the best of 2012 here.
(And you can buy Ice King toys at Amazon.)