Obviously, considering this is straight video of these instances (with commentary and audio from the game), these things are full of spoilers -- if you don't want to know what happens when you enter Icecrown Citadel, steer clear. That said, the video we recorded is after the break. You don't have to watch the whole thing (in fact, at over two hours, you'd be crazy to), as I've tagged the Forge of Souls run, the Pit of Saron run, and the final heroic Halls of Reflection run on their own. Clicking those links or the markers on the video below should take you to the specific parts of the video. Enjoy.
Patch 3.3 is the last major patch of Wrath of the Lich King. With the new Icecrown Citadel 5-man dungeons and 10/25-man raid arriving soon, patch 3.3 will deal the final blow to Arthas. WoW.com's Guide to Patch 3.3 will keep you updated with all the latest patch news.