I haven’t read Under the Dome yet. The first season of the show was good but it kind of went downhill after that. I’ve heard great things about the book.
OMG that show is the worst. It had some potential in season 1, despite the terrible dialogue and acting. It got so ridiculous by S3 I stopped watching, then it got canceled.
I stopped sometime before S3 too. The concept kept it interesting for me in spite of all the bad production and acting. For some reason I thought that it was just a Stephen King idea made into a show until recently when I realized it was a book. I have it on my list.