I would have to go with "Which Witch?" I love "The Stand", but the book I chose was the one that first came to mind.

It's such a great book. It's interesting. The book drew me in. I've re-read it several times. Other people need to read "Which Witch"?

Harry Potter 7
Harry Potter 5
Which Witch?
IT
The Stand

The recently deceased Michael Crichton, with Jurassic Park. The science parts would get a little boring, but that's okay.

Stephen King, with IT and The Stand, although The Stand would take forever to get through.