What is the name of this kung fu movie?

it's at least 7 years old. there was two brothers, one of them turned bad and the other turned good. there was a scene where the good brother was fighting a blow up punching bag i think. the good brother got amnesia i think. the good brother kills the bad brother in the end. there was also a scene where it showed the two brothers as kids in the martial arts school. i can't remember the name for sh!t.What is the name of this kung fu movie?
Twin Warriors with Jet Li.

http://www.imdb.com/title/tt0108281/



"Jet Li was a monk in Shaolin. In a friendly competition for a higher place in Shaolin, his childhood friend almost kills a fellow student for using a concealed weapon (which cannot be used in the competition). He and his friend got kicked out of the Shaolin. They met rebellions at that time of China. His friend betrayed Jet Li and his rebellion friends for money from the China government. Jet Li went crazy and discovered the art of Tai Chi at the recover period. Revenge seem to the only thing he is going to do."What is the name of this kung fu movie?
Kung-Fu-PandaWhat is the name of this kung fu movie?
Dang it sound like GI-joe but that aint 7 years old! Ummm i'm usually really good with movies but i cnat remember either...
Kung Fu Panda