In my opinion, Roll Goal in TP is evil. It can kiss my shiny white behind.
The Yeti-sledding gets honorable mention. I mean, I like the actual sledding for pleasure, but the second part of it, what you do to get the heart-piece with Yeta... When I decided to do TP 100 percent and therefore had to get that heart piece... ARGH! With the help of ZD's walkthrough, I found out how to get to the shortcut, but Yeta is *still* a dirty-rotten cheater! She'll pinch you literally inches from the finish line if you hitch or slow up one tiny bit!
I've never collected (as yet) all of the Gold Skultullas in Ocarina of Time. I actually *like* some of the other collection quests in the games (I *adored* the rabbit-hunting in Spirit Tracks, for instance) and I thought the Gratitude Crystal thing in Skyward Sword was pretty cool (how it gave you insight into various NPCs), but the Gold Skultullas are just... kind of there. And optional (I tend to get enough of them to upgrade my wallet), but as much as I'd like to help the poor cursed family, there are too many of the bloody things! One of the Mask of Truth statues tells you that there are 100 of them. 60 of anything is bad enough, but 100? Forget it. Apathy conquers compassion!