I like it very much, like more than hitchhiker's ... hitchhiker feels more like colour of magic. Dirk Gently feels like at least Pyramids, like slightly later pterry, where structure-wise little things in the beginning are actually foreshadowing later events, they are little clues, and considering this is a detective story (sort of) and the theme is on everything is connected, it is really very well-matched form and content. Also it's very Shada, with the time traveller secretly living in Cambridge for hundreds of years. I mean. This is Shada (x).