Best experience probably was O'mrogg/assassins. O'mrogg himself of course is just hilarious with his talking heads, but what even gave us more LOL moments on vent was afterwards, when we down the corridor, found your MT sapped and your healer being cheapshotted.

The whole Thrall line was great too, from the very first discovery of the Mag'har in Hellfire to the end in Nagrand. You felt like you were doing something important in the lore, not just killing 30 mobs and getting 10 of item X.

Raid encounter... Aran has the best voice by far, you can just hear the madness. Love the fight too. I really am a fan of the Maulgar encounter too, it's like a take-off on emps in which other classes get to "tank" -- think about it, you walk in, and you see a boss and 4 adds and the first thought was probably that you need 5 or 6 traditional tanks.

I also like the moment in Shadow Labyrinth where you round the corner, the door opens up and you see Murmur blasting away at the cabals. In addition, I dig that the fight is kind of like a mini Ragnaros style encounter, given that he uses the same model as Ragnaros.

Maybe I'm alone in this, but I rather like the epic feel of having huge chain quests across multiple zones and instances in order to key for raid instances. The Karazhan and TK key lines have been interesting to poke around.

To insert a nice healthy dose of negativity here, I'd like to nominate the Shadowmoon quest in which Torn-heart sends you out with a pig-whistle to dig up tubers as the worst designed quest in the game, by far. The bad pig-AI, the aggro range on the hostile mobs, the spawn and despawn timers on the tubers, and the fact that they get wasted if the pig aggroes something while digging, coupled with the fact that I was having a bad day when trying it already, make me loathe the whole zone and I've hardly gone back to do the dozens of quests still there.

Yeah, it's a stupid quest. You're missing out on a lot by not going back though -- not only the material rewards, but the deep lore in the zone.

Heh, yeah. Last time we were in there we had the warlock tank Capacitus with his enslaved Wrecker - just because . I love playing with this fight - it's just cool.
It doesn't hurt that getting Capacitus is hands-down the easiest/fastest 3 badges in the game.

Seconded. I thought all of Bloodmyst was very well done.

Thirding this one. The final quest "Ending their world" was extremely impressive start to finish, especially for a low-level zone.

I also liked the Ghostlands quest where you find Alleria's pendant and deliver it to Sylvanas.

My favorite dungeon so far is COT Thrall, followed by Shadow Lab. Didn't do Karazhan yet though.

Awesome as this quest line was, the final step was tainted a little bit for us by the Earthmother saying "Go to Orgrimmar and get Thrall" when, guess what.....he's sitting right in front of her. Guess that's the price of popularity

One quest line that I did really enjoy was the Altruis the Sufferer line - from the netherdrake ride (and seeing that, at the time, inaccessable portal tucked away in the mountains) through to beating up the drooler in Shattrath and collecting his debts. It wasn't anything ground breaking, but just a meaty, enjoyable line of quests that kept you constantly motivated to complete the next part. And hey, the rewards rocked. Not much more you can ask for imho.

In terms of encounters, most of the big contenders have already been mentioned - Maulgar, Aran are both fantastic examples of how good Blizzard can be at design when the guys that created Soccothrates have a day off. My favourite thus far is still the Chess Event for (oddly enough) just being the single most unique encounter they've come up with yet. Yes it can be 5manned, but it's always felt just perfectly placed as a way for the ten of you to blow off some steam, happy in the knowledge that metric tonnes of trash will no longer respawn, and that you can happily shoot the shit with your mates while beating up chess pieces for fun and epics. I'm all for challenges and tough, demanding fights, but every now and then, that sort of experience is hugely welcome in a game that lets face it, most of us take way too seriously.

I'm saddened that no one has made any mention of the various poop quests. :<

Someone did, in the second post in this thread.

I quite liked riding around old Hillsbrad and seeing all the soon-to-be-infamous NPCs. And Blanchy.

I really liked CoT Old Hillsbrad, CoT Black Morass, and Prince Malchezaar.

Both of the Caverns of Time instances were a really nice change of pace from kill trash, kill boss, loot, kill trash, kill boss, loot etc.

Prince Malchezaar is just plain fun. As a mage I get to burn pretty much the entire fight, but the addition of infernals makes for some sometimes pretty crazy scenarios and pockets where I am DPSing in between three infernals :P

There's no night elves allowed in old hillsbrand, I think it's before Warcraft 3.