Played a couple hours of MP last night in the Rush and Conquest modes. Got my arse handed to me (as expected), but had a ton of fun running around with Spark while trying to figure out what was going on. It wasn't easy to log off for the night.
To start, I played the single player campaign to familiarize myself with the keys and some of the weapons. The campaign is OK, it plays like a movie with a typical linear progression, but the animation of the characters is immediately noticeable as superior to most anything we've played before. The facial expressions and textures are amazing. I watched the room (office) I was in fall apart due to bullet impact and explosions and sheets and shreds of paper flew into the air. The concrete barrier I was taking cover behind was chipped away until it couldn't provide cover any more.
If you like playing the FPS type of games at all, and enjoy multiplay, this isn't one to miss. The level of graphics, huge amount of animations, destructible environments and multiple game types make it well worth the purchase.