I won't link the cracked article, because that website tends to be rather crude...but the most interesting parts out of its 6 "failures" in The Hobbit trilogy are...
1. Ian McKellan literally bursting out in tears and frustration because of all the green screen he had to act in. The "forced perspective" that was highly (and rightfully) praised in the LOTR films with Gandalf and the hobbits...was not used in The Hobbit movies, much to the dislike of Ian McKellan:
http://www.nme.com/filmandtv/news/ian-mckellen-filming-the-hobbit-made-me-cry-with-f/291187
2. Viggo Mortensen criticizing Jackson that after the boatload of money from the Fellowship, it became progressively worse:
http://www.ign.com/articles/2014/05/...and-the-hobbit