Kid Buu's Demise

Kid Buu, being the most powerful nemesis in the Dragon Ball Z series is a supernatural force created by the Wizard Bibidi. Being the darkside of Majin Buu and swallowing him, Buu becomes in the insane and malevolent Super Buu being able to obtain his victims powers by absorbing them. But after being corrupting Buu on the inside and saving everyone, Buu had a meltdown and became the 'true Buu' known as Kid Buu and the final fight began on the planet of the Kai's. 

Goku had one choice left and to create the Spirit Bomb. After being distracted long enough Goku had enough energy from Earth to throw the Spirit Bomb on Buu. Ironically he's the only villain to be killed by the Spirit Bomb [excluding Movie Villains] Vegeta and Frieza both survived it, but this time it was enough to over power Buu. 

Goku: you're the most powerful foe i ever faced... I hope you come back again as someone good...

And Goku sends the Spirit Bomb at full force and disintegrated Buu to pieces til nothing was left of him...

This was one of the few episodes where i was at the edge of my seat "shouting stop him Goku!!!"

[c] Akira Toriyama

I actually ruined this picture... i used a blue sharpie for an outline around Buu to show the energy but didnt look right and had to go over it on MS Paint... but u can still see it.... well i hope u guys like the picture