Hey guys, I noticed this a while ago and I'm sure most of you have by now, but i figured I'd mention it.

When you kill an enemy with one of the Hidden techniques, immediately press A to put your sword away. Instead of the plain old 'stick the sword in the sheath', he does the special one that happens at the end of the training sessions for the Hidden Techniques. Nifty little easter egg. I just did the Helm Splitter against a big guy and did the special sheathing, it looked so cool.