The Lord of the Rings films looked absolutely spot on imo.
Everything looked pretty much exactly as I imagined it, that was a great accomplishment.
Apart from that they were utterly shit, pure drivel, I despise them.
I spent a summer kind of near where they filmed a lot of LotR; it's pretty breathtaking to look at. Samuel Jackson has always been more of a visual director than a storyteller though, just look at Pacific Rim.