This video just amazes me.  I have a dog that I love very much.  She's a 4 year old Golden Retriever and she's amazing with the kids, people, etc.  There's one thing that we trained her on from day one and she's pretty good at it.  That's "Leave it".  You know, in case we drop something like pills or whatever.  We don't want her to get hurt.  Obviously.  She's such a "people dog" and sometimes she comes on really strong.  She'll bolt across the house if someone arrives at the door.  And no matter who shows up, she'll go crazy.  I don't know how to fix it, and to be honest, it's not that big of a deal (to me).  But watch what this guy trained his dog to do.  This is unbelievable.

Enjoy!