We've got the possums, skunks, raccoons, groundhogs (didn't see you mention those), and cats (boy, do we have cats) up here, under our deck at times as well. The nice thing about the cats is that they keep the rabbits away from the gardens. The bad thing about the cats is that they breed (Greg can confirm the high numbers of previously bred cats we have here - 14 now, was 24 at one point).
There's a 40 sq. mile metropark half a mile north of here. Every year they have a lottery to see who gets to blow away a bunch of deer in the park because they're completely overbred. There's a test plot in the park on the nature center grounds, surrounded by 10ft high fencing. Inside the fence there's a riot of undergrowth. Outside the fence the ground is pretty much scoured clean by the deer.
A possum got in our garage once. This one was reasonably smart for a possum: 2.5 on the "dumb as a soapdish" scale (that means, dumb as 2.5 soapdishes). I "chased" it around the garage with a pitchfork. Poking it made it stop and snarl, not speed up like any self-respecting pain-feeling animal would do. Someone pissed in the genetics vat the day those things were invented.