I'm over halfway through the book (just finished "Pity") and enjoying it very much. My favourites so far are still the first - the ones having to do with children. He really has a knack for the child's perspective. I really loved all of "The Genius", "My Oedipus Complex" and "First Confession". My biggest laugh so far was in First Confession - when he's in confession and mistakenly climbs up on the ledge in the dark had me in stitches.
I guess I'm one of the few (the only one?) besides fantasyfan to get my hands on a copy of the hard-to-find book, so I thought I'd share pic of it:
But reading the thread is having me wanting to read stories not in the book that some of you are mentioning, so I may be searching them out as well.