I haven't watched the first two (yet) but watched the other two a couple of weeks ago before I got my first clicker. I found these to be very helpful.
After watching the "Leave It" video I questioned whether you could really get success as quickly as he did on that video so I sat down with Ridley and tried to duplicate what he did and guess what, it worked! That was a couple of weeks ago and while I still have to reinforce this some Ridley understands the "Leave It" command!
Rex 2000 - 2010
Retta 1993 - 2006