How to keep out squirrels -- Greased pole atop fence?

My neck of the woods is overrun with deer, coyotes, woodchucks, raccoons and squirrels, and my neighbors have been getting their clocks cleaned. I intend to keep out the deer and coyotes with an appropriately tall fence, but I'm sure the raccoons and squirrels will have no problem getting past it. While keeping a dog could keep the animals at bay, my ultimate goal is to come up with a comprehensive solution that doesn't involve the place looking like some forbidding Small Town USA POW camp, replete with razor wire and spikes and snarling junkyard dobermans.

So I think it might be simple: a greased pole laid horizontally atop the fence? I've seen how a good greased bird-feeder pole can ruin a squirrel's day, has anyone ever tried this on the top of a fence?

Here's a rather touchy-feely vid of what you're up against...

http://www.youtube.com/watch?v=ytQcoW0ZyKE


The main show is in the last minute or two, but what I get from the vid is that one of their main assets is an 8' horizontal jump and pure tenaciousness. I happened to personally involved because they have taken up winter residence in my sisters house


Rufus