then bring us tonight, mister david litt's new book "thanks obama". more than any other president, barack obama's eight years in the white house were defined by young people. in 2011, david litt became one of the youngest speechwriters in history until leaving the white house in 2016, he wrote on topics of healthcare, climate change to criminal justice reform and took the lead as president obama's go to comedy writer. now in this refreshingly honest memoir, mister litt brings us inside obama's world , full of hilarious stories and told in a truly original voice,"thanks obama" is an exciting debut about what it means personally, professionally and politically to grow up . keegan michael t called this book terrific, part firsthand story about being inspired by a cultural icon, part how-to manual for getting involved in politics and taking change. "thanks obama" is a hysterical, heartfelt trip down memory lane and boy, do we need. so without further ado, please join me in welcoming david litt and adam davidson. [applause] >> thank you very much, i'm adam