This build can be altered some, but I've found the -4% resist is nicer than the +1% crit(other alternative in Destr.) It's nice, I use it practically all the time. Other alternatives are to just put 10 points into Destr and the rest into Demonology for Fel Stamina/Imp/Healthstones.
Well I generally show up to the instance half an hour late, I have the lock summon me so the group leader doesn't notice. Then I just kinda target the MT, spam DoTs and watch TV. But it looks like I'm playing. To be honest, I'd say in any given group I do maybe 5 to 10 minutes of actual work. "