What are the bosses you like depending on the classes you play ???

Personally:

As a Rogue: I love Nefarian... He is a great fun boss and a very long fight where you can demonstrate versatility. I also like patchwerk cuz you can unleash the fury of DPS without OT fear

As a warrior: I like the first boss of AQ40. There is a lot of running around to do and the giant pigs are always fun to see I also like to tank good old hakkar because you need to be very reactive and the fight is never winned for sure

As a priest: I appreciate 58 (bob the unscared... i forgot his name in english). You can DPS a little and heal a little. The placement is important and the fight is long enough to be enjoyable

Andariel and Duriel were the best fights ever.

'FEAR ME'!

For me it was Golemagg, in wow, and being melee dpser it is fun to watch other peeps get like 30 debuff stacked

Duriel made my PC lag

Golemagg
Straight, no fuzz.
one big chunk of boss standing there, shooting a fireball at some silly peep every once in a while, and all you do is deal him straight down.
fun because it was the first boss i could measure dps on, as no other things needed to be done.

for now, i enjoy VERY much Thaddius in naxx.... precision running + UBER damage buffs + one guy runs wrong, the whole raid wipes.....
like it