the series on Youtube is awesome as well, you should search Halo 4 Forward Unto Dawn, its a 5 part short series leading up to Halo 4's release, its awesome
check out the video review for Halo 4... very nice indeed! Can't wait for this, I think this online mode will consume my life more than Black Ops did!
http://uk.gamespot.com/halo-4/videos/vi ... ew;WatchIt
also for those of you who haven't yet, check out Forward Unto Dawn, the live action prequel show to the Halo 4 release