Shamelessly taken from the wow general forums, but it posed an interesting and good question, what was your personal favorite raid instance, please suggest both your favorite 10 and 20 man raid instances, respectively.
Also however, what was your favorite boss of the instance? and do you feel that this boss made it your favorite? gogo! interested in the answers already
My personal favorite raid for 20 man: Hammerknell fortress, the theme and atmosphere was amazing and claiming the EU first Hammerknell conqueror achievement was just such a great rush, perfect akylios still to this day is my favorite raid boss of all time, (coming from an EQ1 and 2 player)