So while we're all waiting for the expansion to unlock, or perhaps the servers aren't working, or maybe the mail man was mean and lost your game box. Or maybe you just haven't thought about dungeons yet, being so occupied in the rest of Cataclysm. Here's something to keep you occupied.
Follow this link to MMO:
They've put a lot of time and effort into bringing you a break down off all bosses. The videos might be heroic mode, but that just means you'll be over prepared for Normal mode.