Featuring a WotLK Heroic, Netherspite (yep Netherspite) and Viscidus.
The latter two were supposed to be ~unsoloable~ or whatever you want to call that.
Netherspite is... somewhat an exploit, one could argue that's a ~creative use of game mechanics~ but let's face the truth, even if DRW is supposed to work like that, it's still an exploit.