Delta's posted a video on YouTube of their fantasy flight operated out of JFK to a hangar decorated as the North Pole:
http://www.youtube.com/watch?v=EEkuG18Bwng
This "new route" appears to be operated on a two-class 767-300. That raises an interesting question: which lucky kids got the F upgrades, and were there any shenanigans involved?
In all seriousness, kudos to Delta for this - judging by the video they really went all out to create a great experience.