these r extras from the series which i found to be quite amusing! I laughed so hard! If ur a fan of this anime check these out!

http://youtube.com/watch?v=Td2eaMpCZ1I

http://youtube.com/watch?v=sppSzc04HuI

http://youtube.com/watch?v=yCGiotUjEk4&feature=related

http://youtube.com/watch?v=60wndwiZ_no&feature=related