Favorite Manga-Ka(s)?

Who's your favorite Manga-Ka(s)? For those that don't know a manga-ka is a "manga-god" or a very accomplished manga artists, usually with one or more incredibly strong series in his/her belt.My faves Are Rumiko Takashashi (Urusei Yatsura, Maison Ikkoku, Ranma 1/2, InuYasha) and The Ultimate Manga-Ka, Father of all manga, Osamu Tezuka (Astro Boy, Metropolis and so many more)Who do yas like?

ikeda sakura, cute artwork.
Hiroshi Shiibashi, epic ink-stylized art.
Akira Amano, great action oriented manga with a story to drive it.
Yang Kyung-il, humorous and serious style in both story and art.