While I can't claim that "Monkey Ninja" is as well-known as Lady Punch, it is a very entertaining little video. The clip shows an orangutan (I believe) practicing karate with a human trainer. Click on the image to view it:
Whereas Ladypunch made me feel guilty for witnessing such a violent act, Monkey Ninja fills me with warm, happy thoughts. If this ape can do a spin kick with a smile on his face, it must be true that one can do whatever they set their mind to.