Actually, true story from last night. My wife qued up for a random heroic for the healing satchel but after the 2nd boss of underrot the tank/dps duo bailed for no reason. She added the warrior and druid who sat patiently waiting for 20 minutes in the 2nd boss room waiting for a tank.
I grabbed one of our big deeps MM hunters and carried them through +2 Atal, +4 Freehold, and a +5 TD. Handed out our drops and taught them the routes and fights. Made me feel pretty good.