Donaven (quite randomly) calls today "Thank a Tank Day." Unfortunately, he himself is a tank, so the actual proclamation sounds more like whining about being a tank rather than a sincere thanks for a tank who knows what they're doing, but the thought is noble. Instead of just thanking tanks, how about we thank all players who take a role and fill it out to the best of their ability-- who take a job, whether it be grabbing aggro, laying down damage in the right places, or playing the whack-a-mole game of healing, and do it well and without question.
For all the QQing about PvP and all the crying about how Arena is unbalanced, the best times I have in this game are in PvE situations, where everyone is working together and doing what they're meant to, all the way until the boss' health reaches zero. The main tank plays a huge part in that, by standing where they need to stand, and laying down sunders when it counts. But when a raid is really working together, everyone does what's needed, and that's when it's really great. I'll thank everyone for that.