Be nice to those "machines". They are a lot smarter today so watch your step.
http://www.youtube.com/watch?v=KAS9sjgWkXM&playnext=1&list=PL2A1BA7C54C8D14FD&index=20
http://www.youtube.com/watch?v=KAS9sjgWkXM&playnext=1&list=PL2A1BA7C54C8D14FD&index=20