When you are terrified of skipping to the last page of the book. He has trained us well...
When Mistborn is the first series you immediately want to re-read and nitpick to find all the cleverly hidden easter eggs you know are there but didn't catch the first time through.
When someone asks you what to read and you suggest Steelheart, Alcatraz, and Mistborn while wrapping it up by saying he's a Nebraskan author. (I'm very proud to be a fellow Nebraskan)