General Anime/Manga
wp.madcowdisease.org
www.nobm.org (Hellsing, Death Note, Blood+, Bleach, others)
www.wpshrine.com
muryou-anime-wallpaper.net (tons)
Specific
Air
Aria the Animation
Beck (2034 x 1555)
Berserk
Bleach
Bleach (more, try typing ctrl-f 1920 on the page)
Bleach (even more)
Card Captor Sakura
Chitcha na Yukitsukai Sugar
Clannad
Claymore
Claymore (more)
Code Geass: Lelouch of the Rebellion
Cowboy Bebop (2560 x 1024)
Da Capo
Da Capo II
Darker Than Black
Death Note
Denno Coil
ef - A Tale of Memories
Elfed Lied
Ergo Proxy
Eureka 7
Eureka 7 (more)
Fate/Stay Night
Full Metal Panic
Ghost in the Shell
Girls Bravo
Guilty Gear
Hand Maid May
Hayate no Gotoku
Hidamari Sketch
Higurashi no Naku Koro Ni
Kanon 2006
Kao no nai Tsuki
Kido Senshi Gundam 00
Last Exile (2560 x 1024)
Last Exile (more)
Maho Shojo Lyrical Nanoha StrikerS
Mahoromatic
Minami-ke
Myself; Yourself
Naruto
Neon Genesis Evangelion
Neon Genesis Evangelion (more, some higher res)
Neon Genesis Evangelion (even more)
Operating Systems
Prism Ark
Rozen Maiden
Samurai Champloo (2560 x 1024)
School Days
Seto no Hanayome
Shakugan no Shana
Shinkyoku Sokai Polyphonica
Sister Princess
Sketchbook Full Color
Sola
Spice and Wolf
Suzumiya Haruhi no Yuutsu
Tenjou Tenge
Utawarerumono
Vocaloid
XXXHolic