Update - As reader Schadenfreude points out, there's some turmoil in the world of the Ghostbusters game. Variety reports that Activision have opted out of publishing Sony's game (along with Brutal Legend). So it's without publisher at the moment, but Sony are looking for someone new. Don't expect to see the game before next year.
GameTrailers have a three-part developer walkthrough of the forthcoming Ghostbusters game, and because we love you, they're all below.
Oh, this game worries me. It's written by Aykroyd and Harold Ramis. It stars the original cast. It's based on one of the best movie franchises ever. It could be utterly brilliant. Or it could be a pile of poop, because it's written by people who make movies and not videogames, and that translation is often so horrible. A bit too much points to being a rehash of the familiar scenes from the previous movies, rather than a fresh new story. OH PLEASE BE GOOD. Anyway, you can make some judgments for yourself in the videos below.