Battlefield 3's holding out for a million Facebook likes before it unlocks the final of five videos, which would be this one above, except with producer commentary. This still is 12 minutes solid of gameplay and in-game cutscenes, with annotations so you know what's going on in the campaign.
Some of this has been seen before - such as the rooftop sequence in which the squad bazookas a big-time pain-in-the-ass sniper. But there's a lot of never-before-seen footage in it, and you don't have to do anything on Facebook to see it. (They're currently at 775,000 likes or so.)
There's NSFW language throughout this, so use headphones if that's a concern.