"Rich detailed world, deep, compelling characters"
One of Stephen King's longest novels (a mere 26 pages shorter than the uncut version of The Stand), "IT", is a prime example of what makes King a great writer. The theme of horror merely serves as a framework for what really matters -- the characters and the town and events that shape their personalities and relationships.
The narrator, Steven Weber, does an excellent job.
With the compelling story and great narration, "IT" will keep you engaged for (literally - at over 44 hours) days.
"Five stars for the story, -1 star for narration"
Unfortunately the narrator sounds like he's DJ'ing late night smooth jazz. Don't get me wrong - he has a great voice, I wish my monotone was half that good, but it does take away from the story.
As far as story - it is classic King - a must read.