Now this one is a weird one. I have to say that I don't play much on roleplaying servers any more (this used to be different in other games, but I never found WoW to be a very suitable medium) - and as such my use of emotes is more limited than I might be elsewhere.
I mean ... I don't need to convey my emotional state much when I beat up 10 generic rats, and I'm sure my raid leader would frown on complicated emotes during a raiding encounter. This is different before and after the fight - but in the middle? Not really.
So my most used (and thus by default favourite) emote is /wave. It's something I use resonably often - usually when galloping past someone I know on a road in the middle of nowhere.
Your 5.3 druid to-do list
1 hour ago