What is this movie called?????

I dont remember much about it. Its definitely a comedy...Its not THAT old...it was probably made in the 2000's sometime. Its really funny. Its like a comedy about asians and they do karate or kung foo and i remember this one scene where these 2 asian guys are in this place and one of them throws knives at the other. its a really funny movie. AHH! what is it called!?