What are "Girls
" star Lena Dunham and "Mad Men
" actor Jon Hamm
doing together?The young and hip Dunham introduces the new The New Yorker
iPhone app to Hamm and the world in a five-minute short she created, which is set on Hamm's faux Talk Show
.As a Late Night
host in the video (above), Hamm says, "I don't know what an iPhone is, I've never heard of The New Yorker
, don't know what an app is."Luckily, Dunham has come to the rescue with a clip ...