ok i ll have to do it.
Vanilla
Onyxia was a CF in a circular room
Baron Gheddon and Garr were a CF in a circular room (but they dropped legendary shit so its ok)
Rangaros was a CF in a circular room (he dropped legendary shit too yay)
Razorgore was a CF in a rectangle room
Vaelstraz was a CF in a rectangle room
Hakkar was a CF on a roof
Nefarian was a CF on a roof too
Seepding up
ALL of AQ 40 bosses were a CF in a circular room
ALL of Naxx bosees were a CF in a circular room
TBC -
Karazhan was an awesome exception with the exception of some clusterfucks in a circular rooms
Tempest keep and Underwater raid (sorry forgot the name) - Clusterfucks in rooms of different shapes, Vajshi and KT being the actual definiton of a clusterfuck encounter
Balck Temple - relatively awesome until the Illidan who was a CF on a roof (again)
Wotlk - thats where the thread started so i stop )