Terrible show. I know him as Doogie Howser, MD, the 13 year wunderkind who was somehow a skilled physician. You probably don't know him as this. Anyway, he wrote an autobiography, like all celebs, probably shadow-written (although who knows, he does strike me as articulate and intelligent), and borrowed the Choose Your Own Adventure cover.
Inside, one finds a CYOA with various choices.
I cannot endorse the book, as I have not read it, but I do like that he focused on a somewhat niche market at this point. Then again, I suppose his PR team could be a bunch of CYOA fans.
http://www.nerdist.com/2014/10/book-review-neil-patrick-harris-choose-your-own-autobiography/