It’s good to have friends in high places.

Humor writer John Hodgman, the former Resident Expert (and later Deranged Millionaire) on “The Daily Show With Jon Stewart,” is on tour promoting his latest book, “Vacationland: True Stories From Painful Beaches” (Viking, $25). And for his Nov. 7 appearance at the Mesa Arts Center, he tapped his pal George R.R. Martin to serve as moderator.

Or, rather, “the giant floating head of George R.R. Martin,” as the “Game of Thrones” author will be attending virtually (although we can’t confirm just how large his head will be). The event is presented by Changing Hands Bookstore and Phoenix Comicon.