anyway, i am ken jennings. i think what we will do is talk a little bit about the book and then i don't know how this is going to go but i want to do an impromptu geography quiz. pretty fun when we turn this into a game show. i don't know what c-span is going to think of that but we are going to do a little geography and see how it goes and then some q&a and sign some books and hopefully it will not be as long as it sounds because when i go to book signings and like it when the author errors on the side of getting me home in time. [laughter] is there any other joke i can't finish? [laughter] i will just note that you guys can knock them down. the book is called "maphead." im "maphead." it sounds like a 12 step thing. like my name is ken jennings, i am a map head but it's a troup i'm a fan of maps and all its forms. anybody here eight "maphead"? you want to share my where? my name is, your name is, with initials and i am a maphead to read the book was sort of blown out of experience i had a couple years ago goin

i am ken jennings. i think what we will do is i will talk a little bit about the book and i don't know how this will go but i want an impromptu geography quiz. i have -- we turn a signing into a game show. i am not sure if c-span will be happy with that but we will digital -- little geography quiz show. then i will sign some books. hopefully it will not be as long as it sounds because when i go to book signings i like it when the authors for the verrazzano side of getting the home in time. [laughter] >> any jokes i can't finish? just yell it out. i will send them up and you can knock them down. my name is ken jennings and the book is called "maphead". i am a maphead. sounds like a 12 step thing. ira fan of maps in all their forms. anybody here a maphead? you want to share my creed? my name is, your name is with initials. the book was born out of an experience i had a couple years ago going through my parents's barack which is the huge pile of books. i know everyone's parents's garages a huge pile of box

more than the famous ken jennings, more than ibm's watson computer.he tournament of champions to boot. this dude is good. and smart. >> roger. >> who is kinsey? >> what is to be or not to be? >> what is unicef? >> what is walden pond? >> is this just smarts? this week he hit back to back daily doubles, bet everything each time, and nailed it. >> when i pick novels i went for $1,200. >> answer. daily double. >> and there was. >> i will bet it all. >> all right. >> when i got it. i doubled up. i immediately went to a different category where i thought there might be a daily double as well. >> languages $1,600. >> daily double is there. >> i immediately thought, whoa. i surprised my self that i had gotten two daily doubles back to back. >> reporter: luck, maybe not. roger developed a computer program that helped him study. >> if you watch "jeopardy" enough, you will notice presidents comes up. shake peer, world capitals, novels. categories tend to repeat. >> reporter: game show experts say no program will talk you over that final "jeopardy" finish line.

more than the famous ken jennings. more than ibm's watson computer.the tournament of champions to boot. this dude is good. and smart. >> roger -- >> who is kinsey. what is a pneumonic. what is unicef. what is escargot. what is walden pond? >> reporter: is this just smarts? this week, he hit back-to-back daily doubles. bet everything each time, and nailed it. >> when i picked novels, i went for $1,200 because i thought there was a daily double there. >> answer. the daily double. >> i'll bet it all. >> and i got it and doubled up, i immediately went to a different category where i thought there might be a daily double, as well. >> languages $1,600. >> another daily double is there. >> i immediately thought, whoa. and i surprised myself that i had gotten two daily doubles back-to-back. >> reporter: luck? maybe not. roger developed a computer program that helped him study. >> if you watch "jeopardy!" enough, you'll notice that presidents comes up, shakespeare, world capitals, novels. categories tend to repeat. >> reporter: did it help with the daily doubl