This is a fantastic episode. I can why this episode won an Primetime Emmy Award. I think a lot of people can relate to this episode since quite a lot of people especially when this episode came out were playing World Of Warcraft.
Interesting fact: Matt Stone and Trey Parker the creators of South Park actually worked together with Blizzard in making this episode. Some of the CGI used in South Park is actually not in the game, like for instance the mouths moving when they talk in teamspeak or the pointing of fingers and off course the instance where Eric Cartman's Dwarf smashed the head of that griefer. They used Maya and in-game character together with a (at that point) not yet released expansion pack of The Burning Crusade to recreate the look and feel of the game.