Not that he really needs the help, but Stephen King's most recent, 11/22/63, is one of his best--and that's saying something. It's a big novel, both in terms of ideas and length, but it never feels heavy. And, yes, it's a time travel story about JFK's assassination. And yet it's not. It's about a time and place, fear and violence, and love. And it's great. I wasn't a big fan of The Dome, but this one hooked me early and never let go. Kudos, Mr. King.
BONUS: If you've read It, there's a very nice call back. Beep-beep, Richie.