Do you have a favorite picture book about Halloween? There's a post up at Parent Hacks on this subject. Be sure to check the comments section of the post to see all the suggestions.
As a side note, if you're a parent, I highly recommend reading the Parent Hacks blog. It contains some of the most helpful and practical tips I've ever seen. It's a fantastic resource.
And if you have a favorite Halloween book (whether you're a parent or not), I'd love to hear what it is.