I just want to say I do HM's daily and (besides Hm bt where absolute trash players are attracted to :P) I've never had a bad tank.
You lucky bastard. I'm guessing you're not on Red Eclipse.
We have tanks that stop and go "r?" before every single mob in a flashpoint. We have healers that start crying when you don't stop for a coffee break before each mob. We have dps that breaks their own cc's and doesn't interrupt anything. We have people killing every single mob just because they fear they will aggro. I guess they feel that's easier than actually learning how to play, where to walk and how to position themselves. We have dps that doesn't keep hitting Colonel Vorgath once he charges his implants. The list goes on.