If Sam Fisher ever had to fight vampires, he would probably be really confused. Perhaps he would even cry a little bit. But he would also unwittingly be starring in the Vampire Rain demo, which just hit the Xbox Live Marketplace for those with Japanese accounts. Oh, also, he had much lower production values and was named Lloyd.
If only you had a Japanese friend who didn't mind you using his account, you could see worlds collide as not-Sam-Fisher battles hides from the children of the night. Actually, it's probably best that you don't have a friend like that, because the fan fiction storyline you're coming up with in your head right now is probably better than the demo. But hey, don't take our word for it ... go, you know, make some Japanese friends.