Water Temple....hated it to all hell my first time though, but it is awesome fun your 2nd, 3rd, 4th, 5th, 6th, 7th. 8th, etc. time though.
As for TP....think of this this way: What is the only other Zelda that they kept pushing back to make it killer? OOT, and is OOT a godly game that we all masturbate to? Maybe, but most likely. It should be way cool and I hope it has that 'feeling' that OOT had. It was just epic!
~Brian