i've seen many opossums over the years...just saw one the other day on the way to work in the morning. he was waddling across the road, just a little baby one. i beeped at him to encourage him to hurry...momentarily forgetting that it was 7 am, and i was driving through a sleepy little town..oops.
the COOLEST opussum experience i had was at my brother's house last fall. we were standing on his back porch, and i saw one walking along the top edge of the fence about 15 yards away. my brother's little dog went nuts, and the opossum just froze where he stood on the fence. i tried to tell him that playing dead on the top of a chain-link fence wasn't very effective, but yet there he stood. my brother walked over and yelled at it, yet there he stood. my brother grabbed a loooong stick and tried to push him off the fence, yet there he clung, frozen. finally, when he thought no one was looking, he took off down to the end of the fence and disappeared behind the shed, and presumably, into the woods. what a brave little guy!