Triple threat (actor/comedian/author) John Hodgman has a new book coming out next week, "That Is All." To get the word out, he's put together a really fantastic web video that's been posted over at Funny or Die.
See if you can count all of the celebrity cameos in this thing. It's quite impressive. I think you'll also enjoy the scene in which he freaks out tourists in Times Square (something all New Yorkers quietly dream of doing).