Razorgore the untamed BWL - (I joined a guild 4 bosses into MC) I remember we'd killed Ragnaros the week earlier and we planned to go to BWL after the reset, at the time certainly for me, it was a big deal... it was the first time I'd progressed to the next Tier and it felt amazing. The Raidleader randomly logged on to see if we had the numbers to get an early BWL raid to practice Razorgore... it was 70% guild and 30% PuG friends, we got to the 2nd phase but just didn't have the ability to continue since we lacked vital players (tanks and healers mainly)... the reset came and after an Onyxia kill we went to BWL... Everybody in the guild wanted a spot, 3 attempts and we killed the boss. The thought of continuing through BWL had the guild really excited.
Anub'rekhan Vanilla, late in Vanilla after my old guild fell apart I joined a new guild that were starting Naxx, First progressive kill with my new guild and it felt pretty good.
Lady Vashj, required the guild to really work together.
Firefighter - Mimiron Hardmode, great fight.
All of these encounters had great settings, great music and they were important guild kills which built up the hype.
Though there have been bosses and bosses in the whole WoW life, the most memorable one, that I enjoyed the most, and never felt the same excitement again, is Nefarian from BWL in Vanilla.
That joy of downing him after months being stuck on him, and the explosion of Teamspeak with guildies screaming... it was mutual nerdgasm that never repeated itself. And compared to this, all the other kills to this day compared to this one felt like "just another boss".
The first time i saw a dungeon boss was a wow-moment for me. It was inside old Ragefire Chasm seeing Taragaman the Hungerer for the first time. I was a low level new player and didn't expect such a giant boss already. It was cool when my team killed it. We killed something big, that was awesome. If you look now it was nothing, cause many big bosses followed after. But for the first time it was good stuff.
I know it is not a raid boss, but when I first started playing WoW at the launch of TBC, Edwin Van Cleef was the first major hurdle I ever had to overcome. In my guild group, we were all new and none of us had a main to run us, so it was all a challenge. Sneed and his Shredder, Mr. Smite, and the Capt himself. It was the only time it ever took me, or any group I was in almost 2 hours to complete it. We were all sorely undergeared and had no idea about the game, or any of the mechanics involved. It was the most fun I ever had playing WoW... and I sure do miss it
Not because he was hard, but the way he got killed on our first attempt.
Moroes from Kara.First time my guild went there, everything was going fine and dandy, can't remember what went wrong, but eventually it was only him at low health and one of our healers.Combat log went something like:"Healer casts shadow word:death on Moroes, Moroes dies.Healer has killed Moroes."
Had to mute vent because of all the shouting.
~ Vanilla ~
- Twin Emps and stupid Huhuran HEY YOU HAVE TO GO FARM NATURE RESIST GEAR / go to maraudon -.-
- ZG Tiger boss randomly turned into a tiger after killing all 3 at the same time then slaughtered my raid and was like what the fuck he turned into a tiger LOL
~ BC ~
I honestly did not play in this era very much so I don't have many memories here.
- Council Uldaur ( You seek the secrets of ULDAUR? THEN TAKE THEM ~ Turns your tank into a fucking bomb )
- Yogg Zero
- Lord Marrowgar ( BOOOOOOOOOOOOOOOOOOOOOOOOOOONESTORMMMM )
- Lich King ( Cmon I don't even need to say anything )
~ Cataclysm ~
- Elemental Council ( Awful fight in Heroic NEVER AGAIN )
- Heroic Ragnaros
- Lord Ryolilth ( Whos idea was it to to make a driving mechanic encounter GOD THAT WAS AWFUL )
- Spine of Deathwing ( Worst hardmode EVER )
- Madness ( Most underwhelming final heroic boss EVER )
Definitely The Lich King. We fought him very late in the expansion when the buff was at 30%, but it's still my favorite WoW moment by far. Not only was I greatly invested in the foe I was fighting, but it was just such a fun encounter mechanically. I also cite the Gunship Battle as being a ton of a fun, even if it wasn't all that difficult (although I remember at least one Mal'ganis pug that was so terrible, we actually wiped four or five times before calling it).