I myself am enjoying what I've seen so far, 5 weeks in. With all these characters caught in such an extraordinary circumstance, it very much has a Stephen King feel to it. I haven't read the book yet, however, and in fact, I'm somewhat happy that I haven't. There are many reports of the show deviating from the book in several different ways, some of them fairly large I understand. King himself has even released a letter to his "constant readers" defending these changes, and insisting that the TV show is as good - or maybe even better in ways - as the book. I know I'll find my way to reading this massive novel in time - I plan to read all his works before I die - and I'll let you know at that time which I liked better, the novel or the show. For now, I'm just enjoying the series for what it is, and millions of others are doing just the same. Join us - 'Under the Dome' airs on CBS, Monday nights.
For those who aren't watching, and/or have not heard anything about the show, here's a preview that was released shortly before the series began: