When I played Paladin at PS3 release, if a WHM wanted to pull aggro first, they were more than welcome to tank everything.
On the flip side, if a tank speed runs / pulls above and beyond the ability of the party , i'm more than happy to let them die while i'm healing. It usually leads to pulls being more to the capabilities of the group.
Another that annoys me (whm is my main btw, but i occasionally go play monk), is a WHM who ran all through parts of snowcloak, pulling everything to the tank, who wanted to deal with the dungeon on a mob to mob basis, then started crying pull more every time the tank stopped at a mob.
Final most annoying thing to me - Giving healer advice/asking them not to do something and getting "you don't know my job, i do" thrown at me. Happened to be the same healer as the pull comment above. I replied by kindly item linking all of my whm high allagan gear lol.