Sure. I'm still working through the game on normal, but when I'm done I'd be happy to go through it with you. Send me a message on Live. As for one sitting, not sure about that. I can do quite a bit in one sitting, but probably not the whole game.
If this rumor ends up being true, I honestly wouldn't know how to feel. I was one of the people who was satisfied with the MW2 campaign, but I also love Dead Space, so I would be really interested in seeing a few of the head guys on that game work on MW3.