I loved seeing rivendell and galadriel at the same time.. bit of an elf fan basically. I just liked seeing different areas that weren't explored in the LOTR films. Also the first few scenes with the dwarves at bag end!
The part of the "Hobbit" films that replays in mind is the scene of Bilbo & Smaug the dragon. Incredible characterizations of the fiercest dragon revealing himself and a little Hobbit thief. Great performance of Bilbo keeping a dialogue going with Smaug while Bilbo tried to palm the Arkenstone. Hobbits are certainly light on their feet to high tail it away from dragon's fire!