Unboxed the base Zombicide game last night. I'm pretty impressed with the components with the exception of the character sheets.
There isn't a lot of game for $90, but the models are where a lot of the cost comes from... so if you appreciate that you won't have a problem with it.
The game itself seems pretty straight forward and appears to play like a run-and-gun + roll a bunch of dice until we die style of game. That's not to say it lacks strategy, but it certainly won't compare to the level of strategy involved in other popular games.
The game comes with 10 or so missions to fit any size playgroup and skill/level of experience. There's also the opportunity for self-made scenarios!
All and all, I think this will be a great game to play with people who want a more light-hearted game (as most co-op games are) with the desire to have a blast and tell a story. I think it is best described as an "advanced" beer and pretzels game, so take that for what it's worth to you!
It reminds me of Hero Quest, except without the Game Master. Simple mechanics, hack-and-slash style, customizable scenarios and lots room to make the game what YOU want it to be.
So... who wants to play?