When my pittie Vanya started getting overwhelmingly intense in the house and yard toward outside stimuli, here's what worked for us:
1. prozac: Vanya was becoming pretty OCD (ie, staring at lights and shrieking), and a low dose of prozac has helped
2. window film: from amazon. This stuff is great. It goes on with just water, so it's easy to put on and off and move around. Blocking the back window from view has helped enormously
3. and a zillion reps of Look at That, invented by Leslie McDevitt of CONTROL UNLEASHED fame. We use the detailed protocol that's posted over in the yahoo group clicker solutions files. I can't cross post it here, but it's completely worth joining the yahoo group to get access to that file. (It's the one Liz is describing--much more detail than in CU). Following this step by step, and rewarding Vanya with great treats, means that when he now sees a bear, deer, person, or dog go by when he's on the deck, he gives one mightly shriek then runs to me, tail wagging, for his cheese. Before LAT he would go so terribly over the top that I thought he might have a seizure.