Grab his paws, tell him in a firm voice "down" or "off" and then place his feet on the ground. If he bounces or hops up again, repeat. If he stays on the floor, tell him "good dog! Good down!" and scratch his ears.
This works for other breeds as well.
All my fight strategy is based on deliberately injuring my opponents. -
Crippled Avenger
"It is the same in all wars; the soldiers do the fighting, the journalists do the shouting, and no true patriot ever get near a front-line trench, except on the briefest of propoganda visits...Perhaps when the next great war comes we may see that sight unprecendented in all history, a jingo with a bullet-hole in him."
First you get good, then you get fast, then you get good and fast.