Though it's a lot of fun to work towards achievements, I've got to wonder if we're missing out on deciding for ourselves what's important in the game -- what really constitutes an achievement. Accidentally stumbling into an achievement for exploring a zone, for example, doesn't really feel like I've accomplished anything important. But still, I've got the achievement, just like I'd get if I killed the baddest beast in the land. And sometimes when I do things that I think are really epic, like soloing a dungeon or keeping a raid alive when I'm the only healer left, there's no achievement to mark my accomplishment.
So I put the question to you, dear readers: what World of Warcraft achievements really feel like achievements? And what non-achievements really ought to be achievements?