Gin Tama
銀魂 (original)
In an era where aliens have invaded and taken over feudal Tokyo, an unemployed samurai finds work however he can.
Starring Tomokazu Sugita, Daisuke Sakaguchi, Rie Kugimiya, Akira Ishida, Fumihiko Tachiki, Kazuya Nakai, Kenichi Suzumura, Takehito Koyasu, Yuko Kaida, Satoshi Hino
Watch "Gin Tama" on Hulu Plus released in 2006. It's a animation and action & adventure show, and has a rating of 8.7 out of 10 from Imdb which is very high for this kind of show.