Kay, so I just got out of ToC heroic, and while I just posted, I have something to say.
LOOT IS FRICKING NOT IMPORTANT!
It is a means to an end, not a goal. And all the lootcrazy idiots out there need to start putting things in perspective. You can go again tomorrow if it's an instance, you can go again next week if it's a raid.
And you know what?
You will replace that piece of gear sooner than that it is worth fighting over. I have Illidan's hammer in the bank, best in slot way back when. I replaced it with a blue at level 76.
It is not worth it. Stop alienating people over purple pixels.