Every player has those actions or spells for your character that basically do nothing but take up valuable action
bar slots. For my hunter, I can safely say I've used Eagle Eye maybe one time since I got it, and Eyes of the Beast gets
about as much playtime, as well.
There's an interesting thread on the official site debating the usefulness of various abilities; it seems every class has a long list of things that only serve to gum up the works. I know my Paladin has never used several of his seals in battle, and more than one of my blessings go unused for the most part, too. In fact, I deleted many of them from my action bars a while back. After all, you can't have too much space for emotes!