Yes, it does all begin to look the same after a while, doesn't it? For me, the worst thing was accidentally throwing the ball down a pit and having NO idea how to get to that particular area of the floor below.
Favorite:
Sand Ship (Skyward Sword) - This dungeon was such a cool concept, and I think it was pulled off extremely well. The time shift mechanic was a ton of fun, and the level design overall was really tight. The Ship didn't feel like a big expansive space like many dungeons are, so it wasn't...