I still need this myself.  I'd love to run it with guildies - got really burned by asshats trying to run heroics before and stopped doing it.  I don't like it when someone in the group rags on others the whole time, whether or not any of it is directed at me.  It's not enjoyable.  Things have probably changed since then - lots more people running heroics, but I still have a bit of a sour taste in my mouth.

The last heroic I ran we all just left the group leader standing alone at the final boss.  It was worth it to the three of us to give up that kill in Arcatraz, though his friend stuck by him.  We were breezing through the instance but that guy was a total rag.