I'm man enough to admit when I'm wrong. And declaring the Snuggle Suit the last word in Snuggie technology was most definitely one of those times. The Coz-E is the heated Snuggie of your closest-held dreams.
The only downside I can see is that it's both impractical (gotta plug it in) and unsafe (wouldn't want to get it wet) to take on a Snuggie bar crawl. Otherwise, though? Likely the best $68 you'll ever spend on a wearable blanket. [Urban Outfitters via Fashionably Geek]