I am VERY picky about the science fiction I read and watch. I don't like most of it. Actually, I DETEST most of it. I love Adams' stuff, though. It's sorta sci-fi!lite. It's more about character interaction and hilarity than actual sci-fi and I'd even put this particular book in a fantasy/paranormal category rather than sci-fi. It's not really them, either but now I'm rambling.
This book has hilarious characters and all the witty one-liners that you expect from Adams but a solid plot is thrown in for good measure. More than that, it's just plain fun to read. I didn't like this as much as Hitchhiker but I'm definitely looking forward to the sequel, The Long Dark Tea Time of the Soul.