The Daily Grind: What's your favorite MMO dungeon?

Star Wars: The Old Republic - Revan in the Foundry
I've been running a lot of flashpoint PUGs in Star Wars: The Old Republic lately, mainly because I'd like to finish my story quests but I can't bear to level via the usual FedEx-this-and-kill-that paradigm any longer. I've never been a dungeon crawler, but the SWTOR variants I've done thus far have been pretty enjoyable, mainly because of their nods to Star Wars lore.

What are some of the dungeons you've most enjoyed over the years? Did you enjoy them due to the mechanics, the story, or both? What's your favorite MMO dungeon?

Every morning, the Massively bloggers probe the minds of their readers with deep, thought-provoking questions about that most serious of topics: massively online gaming. We crave your opinions, so grab your caffeinated beverage of choice and chime in on today's Daily Grind!
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