See my signature for currently "farmed" heroics. I am now on a personal mission to video every single one of these instances on heroic and put them up here. Redid the Gundrak Video yesterday, tonight I will probably do 1-2 more videos - hopefully by next week I will have 6-8 videos online.

I also have another thread in this forum with a full download for my Heroic CoS timed run - though to make it in 25 minutes probably requires somewhat decent gear. It might help out at least!