I have successfully reached this goal on December 23rd 2012.
I invited some friends over for a day and we started with the first movie around 12:00 and finished the last around 00:30. We ate carrot cake like it was just a normal evening snack, drank a lot of Coca Cola and had long discussions about scenes which were long gone. It was a lot of fun to watch them in a row and next time we’re going to watch them, we’re going to do the drinking game involving Frodo’s jizz face (which we will HAVE to do, if we want to be able to last the full twelve hours again).
I will also definitely watch all three The Hobbit movies in one day when they’re all available and hopefully have a blast again.
I sadly didn’t take any pictures this night, but I think everybody can kind of imagine how we looked starting the movies and how we looked when we were done.