Shueisha - This is the official website for the company that Dragon Ball is published in as well as other Akira Toriyama works. This site is only available in Japanese.
Jump Land - It has the fastest way to get the latest news from Japan on Shueisha productions and has a fun interactive role playing game you can play online (high speed internet connection in needed). This site is only available in Japanese.
TOEI Animations - The website for the animation company that Dragon Ball was produced at. This site is only available in Japanese.
TAVAC - This is the website for the studio that Dragon Ball was created in. It's the TOEI Audio Visual Art Center. This site is only available in Japanese.
FUJI Television - This is website for the Japanese channel that broadcasts Dragon Ball. This site is only available in Japanese.
DaizenshuuEX - Formerly known as VegettoEX's Homepage. Contains tons of current information. It's been around.
Dragon Ball Asylum - A very unique website for the insane! Amongst the many rooms here you'll find pics, series info, music, fanfiction, fanart, links and more!
Planet Namek - Sorry this site is retired and has been retired for a couple years, I keep it on in good memory.
Akire's Dragon Ball Domain - A friend of Planet Namek, they kept on her legacy when she left until they left.