Crisis averted!
I skimmed through Return of the King tonight, and I don't think it's worth watching. It was done by the same guys as The Hobbit, only it looks a lot sloppier. Also, it seems to follow the hobbits almost exclusively, with Sam getting way too much screen time.
The Sword in the Stone: Quality Disney. It's kind of weird that the entire movie is spent with Arthur and Merlin taking the form of various animals, only to have Arthur become king in the last five minutes, but it's still great. And the fight between Merlin and Mim is legendary.
Rock and Rule: Not bad. It kinda drags in places, but overall not bad at all. The super-detailed backgrounds are totally reminiscent of anime films of that era, which was probably intentional. Hell, it's even possible it may have inspired an anime or two.
Fire and Ice: Ralph Bakshi and his fabulous rotoscope machine back in action. It works a lot better here though, with the characters blending a lot better with the painted backgrounds, and the facial animations seem to be hand drawn more often than not. Pretty derivative, but surprisingly watchable. Probably the best thing I've seen from Bakshi, but it helps that Frank Frazetta was along for the ride.