Gluth on 25 man is my favorite because he is a great challenge, even at level 90 and in decent gear.
Patchwerk for me too. A great boss
Admittedly, I love the safety dance with Heigan the Unclean. There were many a time when I died during the movement phase of the fight.
Original vanilla horsemen... evil raid management...
Maexxna is the true essence of arachnophobia!
My favorite boss is Loatheb! He's a cutie.
My favorite boss was Patchwerk, always a challenge before he go mad and berzerk everyone.
Maexxna is my favorite Naxxramas boss so far!
My favorite Naxxramas boss is the Four Horsemen battle.
Instructor Razuvious. has always been a personal favorite
Flickwerk of course. You mean I can stand still and mash buttons and win loot? Sign me up!
Heigan for sure!
My favourite boss is Kel'Thuzad.
I always loved Gluth - the zombie mechanic was so fun!
Not boss but class challenge so far - hunter's one with loatheb. So much random!=)
Thaddius obviously! ;) Cuz his so creepy :3
Grand Widow Faerlina