Birdy

Cowboy Bebop

Dragonball

Flame of Recca

Gundam Wing

Hunter x Hunter

Inuyasha

Mononoke Hime

Oddments

Outlaw Star

Ranma 1/2

Rurouni Kenshin

Trigun

Yuu Yuu Hakusho

Grim reaper?
There are lots of Shinigami in anime, a few dozen in Bleach alone, but Botan has to be the friendliest and least threatening of the bunch.
 
Added: 10/22/08 From: Celga
 
Grim reaper?