I did join-up with a horse today (Ziggy the colt and I'm doing it with Ned on monday)
It's one of the most magical things you can do with a horse. I'll see if I can find a video.
http://www.youtube.com/watch?v=9Dx91mH2voo this is how you form a REAL bond and it proves that horses aren't just mindless beasts, they do want to accept you and be accepted by you.