I think my first Ramparts pug,
Shadow Priest healing. Kept popping in and out of Shadow Form to DPS, of course never used VT or VE.
A Hunter that "forgot" to pick up ammo, but hey id didn't matter, 'cause he had Fiery on his axe! Also left his pet on Aggresive.
Warrior (our tank) that refused to use a shield because he couldn't DPS.
Mage that was never there. I think he made some water at the start and was never seen from again and ended up self booting for being AFK for so long.