The Slacker's Guide to World of Warcraft

Atlas
http://www.atlasmod.com/

Are you tired of wandering into a dungeon and having no idea where you are going? Some jerks will tell you things like, "Read the quest text, n00b!" but those guys suck and have zero tricks up their sleeves... unlike us. We've got Atlas, an add-on that puts a tiny icon on your mini-map that looks like a globe. That teeny icon hides maps to every instanced dungeon in the game, and all you have to do is press it! Never again will you stand dumbfounded when a member of your group asks where some obscure boss is located. Now you'll have the answer right at your fingertips, and be a hero to your entire party for doing next to nothing.