“Ken Jennings hops aboard our thundering avalanche of comedy and surfs it like a pro. Lively, insightful, and crawling with goofy factlings, Planet Funny is for the comedy geek in all of us."

– Maria Semple, author of Where'd You Go, Bernadette?

“Ken Jennings has done the impossible: he's written an actually funny book about comedy. Ken is brilliant and incisive and the kind of guy with so many smarts that it makes you go, 'Man, that guy's really smart.' Fans of comedy will love Planet Funny and will undoubtedly wonder why I am not mentioned more.”

– Michael Ian Black, author of Navel Gazing

“This book is fascinating, entertaining and – I’m being dead serious here – important. The joke-ification of our world affects everything: politics, science, art, literature. And Ken tells the tale with wit and insight, not to mention a couple of fart jokes.”

– A.J. Jacobs, author of The Year of Living Biblically

“When did comedy become so serious and the daily news become so laughable? In his latest book, Ken Jennings provides excellent insight in detailing how comedy has infiltrated every corner of contemporary American culture - for better or for worse. Planet Funny is an illuminating take on that old cliché: ‘Everybody’s a comedian.’”

– Kliph Nesteroff, author of The Comedians

"America’s biggest brain turns his attention to modern comedy — and delivers a book full of humor and insight. As a reader, I’m delighted… and as a comedy writer, I’m annoyed that he understands my field better than I do. Stay off my turf, Jennings!"

– Tim Long, writer and producer of The Simpsons

"This book is full of good sense and meaningful interviews, and it would be difficult to find a smarter or more satisfying treatment of a subject so evanescent and idiosyncratic as comedy."

– Kirkus, starred review

“Jennings’ holistic, incisive argument presents a strong case that our comedy-first culture is resulting in too much of a good thing. In a punchy, engaging style, he documents humor’s history, evolution and twentieth-century explosion….Planet Funny is smartly structured, soundly argues, and yes – pretty darn funny.”

– Booklist, starred review

“A philosophical conundrum Jennings expertly navigates....Jennings’s remarkable research and clever hand make an impressive and highly entertaining work that pop culture enthusiasts will not want to miss.”

– Publishers Weekly, starred review

"Ken Jennings has achieved what physicists have always said was impossible: he's written a book that analyses the mechanics of humor while being very funny. To paraphrase EB White, if analyzing a joke is like dissecting a frog, in this case the frog is shouting 'Ooh! That tickles! More! Do it again!'

– Peter Sagal, host of NPR “Wait Wait…Don’t Tell Me!”

"An entertaining deep dive into culture... a highly entertaining yet genuinely scholarly look at the evolution of humor."

– Bookpage