I want to say, Neverwinter Nights. But Chronicles of Spellborn is right up there.

Everquest for me.

guild wars factions

heroes screwed the whole game right up the butt

Its not been made yet. :)

Seriously though, probably DAOC. Loved the myth-history setting and RVR.

Asheron's Call

Asheron's Call 2

I'm still subscribed to Asheron's Call with 4 accounts active. I look forward to the day they re-release some new form of Asheron's Call.

-Padre

It's a toss up between SWG and EQ for me. EQ had the most fun PvE content from the very start of any game I have ever played and just got better at the max cap. SWG had the best crafting system, skill system and player housing/city building out of any game I've ever played.

 Tabula Rasa. The universe was amazing, the story was entertaining, the combat system was very awesome (even if it may have been the normal MMO system under a veil), it looked great. Overall, I loved it. It wasn't a revolution in the genre or anything like that, but it was really, really fun. I still am sad thinking of it's closing, especially as it was finally getting up and running, with the "Earth" instance, the mechs (complete with a cockpit view), the powersuits (big armor suits that granted powerful weapons and speed), they finally began to flesh out an organized PvP game (with mechs involved), it was beginning to be a great game. I know many will disagree, but I still think that TR was an amazing experience, and the box will sit proudly on my shelf until I can install it and play it again, hopefully.

I also find EVE entertaining, it is rather a new breath to the genre, and I enjoy the number crunching, logic, and thought involved. The fact that it's a complete sandbox doesn't hurt.

Originally posted by Padre-Adamo

Asheron's Call

Asheron's Call 2

I'm still subscribed to Asheron's Call with 4 accounts active. I look forward to the day they re-release some new form of Asheron's Call.

-Padre

same but without the active accounts.

Originally posted by Murashu

It's a toss up between SWG and EQ for me. EQ had the most fun PvE content from the very start of any game I have ever played and just got better at the max cap. SWG had the best crafting system, skill system and player housing/city building out of any game I've ever played.

what he/she said

but leaning more towards SWG (pre-cu)

EQ no doubt about it, had the most fun out of all the mmos I played, and I played them all...

Originally posted by Padre-Adamo

Asheron's Call

Asheron's Call 2

I'm still subscribed to Asheron's Call with 4 accounts active. I look forward to the day they re-release some new form of Asheron's Call.

-Padre

Heard some really good things about that game, sadly i never played it :(

I'd vote d2 if it was a mmo, but SWG is a very strong contender.  

Since you say MMO and not MMORPG i have to say Americas Army version 2.0 to 2.3.  Of all the games i have played, i have never had as much Fun, challenge, adrenaline rush, uforia words cant really describe how i felt before patches ruined this game to hell.   The Army took out most of the fun elements to pander to the crybaby kids and parents.  Removing the RPG rocket out of the most popular map, removing nades  from other maps, shortening the throw distance, decreasing the blast radius removing jumping , drop shots from weapons like the m203 basically cutting my nuts off with every patch.  Since then i have never enjoyed a game the way i did 2003-4. 

Moved over to mmorpg's but i find that the addiction is different its more challenge, grind, achievement with hint of fun.  wurmonline anarchyonline runescape, my first mmorpg was RS its was the perfect game for an introduction to the genre.  anarchy was perfect, lots to learn and just when i was at my peak of knowledge and wealth the population took a huge dive.  Wurmonline is innovative game that only has one DEV its a true sandbox its major flaw is its a indi game.  Throw a new engine and a big name publisher at it and i am sure it would be a major contender.

It would be Flyff and Aion for me... I love flyff since it was the first mmo that I played. I enjoyed it eversince it was V.7 until now. I like the graphics and how I customize my characters I like the fashion set.. But the thing that bores me is when you reach high level you got nothing to do and just go to arena. And talk to other players. that's it... Aion, is perfect the graphics hax! the characters and jobs are good. Still playing it.

i think in general whatever mmo you start with is always a bit of a favourite as you get so use to how it works so fro me i always go back to wow ... its so customizable and everything in it works, well most of the time. however i do admit the newer mmo's coming out have great idea's with things you can do combat ect i just wished they could make them work as well as blizzard have with wow

World of Warcraft Classic

Everquest by far and away.  Thousands of hours logged over many years.  No MMO has held my attention for more than a few months since. 

Favorite RPG of all time: Anyone remember Pool of Radiance (AD&D)  .   I played it on a C64 but it was available on other systems.

Asheron's Call 2 for sure. Great game, but it's Turbines fault for making the game bomb due to the immense lack of real advertisement or ANY kind of actual useful information about the game on their own website. Jeez.

AC 1

Myth of Soma.

Shame hackers completely destroyed it and forced it to shut down. Was developed by a Korean company which stopped supporting it. Game Network was incharge of it in Europe, shame they are the shittiest company going as they got some really great games from Korean, but I think they have shut down aswell now.