Posting a few vids of the game.. this is end-game content that you raid at lvl 60. The game doesn't really start until you get into groups that do this shit. The bosses require massive organized groups of 40 people, balanced out by over 7 classes. (mages, priests, hunters, rogues, warriors, etc)
http://www.youtube.com/watch?v=fh-qZmRxC8k&search=warcraft%20onyxia
http://www.youtube.com/watch?v=IKuBawCT-74&search=warcraft%20ragnaros
http://www.youtube.com/watch?v=hu97MLwL2y0&search=warcraft%20nefarian
http://www.youtube.com/watch?v=7uh_S9PQzXo&search=warcraft%20c%27thun
