Celebrity·Posted on Aug 7, 2012Jon Hamm And Lena Dunham Channel Johnny Carson's "Tonight Show"They got together, along with Alex Karpovsky, to introduce The New Yorker's new iphone app. Could this be any more adorable/ perfect?by Lauren YapalaterBuzzFeed StaffLinkFacebookPinterestTwitterMail View this video on YouTube Via allthingsd.com