Since the wife is constantly saying, "Jesus, you wrote this much about that?" Here's a small, easily digestible rant with her in mind.
The game mechanics are solid. Like the lightsaber in Jedi Knight II, the proton pack feels right. In its best moments, the jokes hit their mark and that not-quite-scary-but-damned-unsettling vibe of the first film is achieved. It rarely made me laugh, but there was a smile on my face for the whole game.
The game's too short, and the ending is sudden and unsatisfying. There's a little too much exploration and not enough busting of ghosts. The voice acting ranges drastically in quality - and not just from Bill Murray. Most of the jokes fall flat. Sigourney Weaver and Rick Moranis are sorely missed - especially Weaver. It also offers very little re-playability, though the multiplayer will give you a few more hours of enjoyment.
Personally, I'd rent the console version or buy it for thirty bucks off of Steam - if you have the rig to run it. The PC version doesn't have the multiplayer component, but it's half the price. Give it a try. It's a big step forward in movie tie-in games.