one of my favorite was Heroic Mech. one of the big glowy fist robots on top level wiped team, only me standing with him at 60k health, and he is capable of one shotting me. I kited him for 12 min. (the priest actually kept track) and killed him solo, then popped out jumper cables XL, and rez'd the priest
Gotta list my number 2 though.. First time we dropped Prince in Kara, was just me and a pally healer standing with him at 5%.. which is a ton for him (very very high max hp, 1mil if I remember right) we get him to 1% btw pally is tanking and healing herself at same time. So pally drops. im running like a madman shooting my only insta cast with a 5 sec cooldown, for about 45 sec.. which is a long time in that situation.. he died the very same moment I did
The screaming on Vent was deafening, lol not only when he dropped but the whole time i was kiting.