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

Seeing stars
Eventually all those blows to the head start to take a toll, and Goku didn't have a lot in his head to begin with.
 
Added: 2/25/07
 
Seeing stars