Listmania!

Otaku Books
By an Amazon.com customer
Megatokyo, Vol. 1Megatokyo, Vol. 1 by Rodney Caston
Buy new: $9.95 / Used from: $0.01
The ultimate Otaku webcomic. First volume is a bit sloopily produced but the rest are pretty sound.
Cruising the Anime City: An Otaku Guide to Neo TokyoCruising the Anime City: An Otaku Guide to Neo Tokyo by Patrick Macias
Buy used from: $6.27
Bit more than a travel guide, bit more than a cultural study. A fun and detailed look at the various otaku subcultures roaming Tokyo and where to go for them.
The Anime Companion: What's Japanese in Japanese AnimationThe Anime Companion: What's Japanese in Japanese Animation by Gilles Poitras
Buy new: $12.37 / Used from: $0.28
The original, the be-all and end-all of anime books
Tokyo RoadkillTokyo Roadkill by Isabella Kraft
Buy new: $18.88 / Used from: $28.42
Isabella Kraft's novel of doujinshi, sake production, homosexuality, and samurai dellusions.
Wrong About JapanWrong About Japan by Peter Carey
Buy new: $11.95 / Used from: $0.01
A father and his otaku son go to Tokyo and bond. ^_^ sweet
Snakes and EarringsSnakes and Earrings by Hitomi Kanehara
Buy used from: $0.96
A haunting Japanese novel that didn't get too much press here about Japan's underground tattoo culture
Genshiken: The Society for the Study of Modern Visual Culture, Volume 1Genshiken: The Society for the Study of Modern Visual Culture, Volume 1 by Shimoku Kio
Buy used from: $3.40
A hilarious manga series about a group of otaku and their small club's struggles to maintain existence in their school.
How To Pick Up Japanese Chicks And Doom Your Immortal SoulHow To Pick Up Japanese Chicks And Doom Your Immortal Soul by Josh Muggins
Buy new: $13.50 / Used from: $4.20
Very funny half memoir half howto about teaching English in Japan and picking up women
Zakennayo!: The Real Japanese You Were Never Taught in SchoolZakennayo!: The Real Japanese You Were Never Taught in School by Philip J. Cunningham
Buy used from: $0.01
Hilarious little book of Japanese "curses" and vulgarities