I really enjoyed them - not that much different to his usual material, really.
Philip Pullman's stuff is supposed to be for children but havig read the 'Northern Lights' trilogy: a/ I enjoyed it immensely & b/ I thought it really complicated, dark and nasty!
I love these books. We used to have Truckers on video which the kids loved to watch, it was one of those things that kids found funny on one level and adults on another.