Reuben is a 5 yr old pit at the shelter I volunteer at. He came in as a stray with quite a few scars on his shoulders and legs (you can see some of them in the video). He is super sweet boy and is actually quite smart (the workers have taught him a ton of tricks).
Below is a video of him with a lab mix at the shelter. He is pretty laid back and would make a great pet for an older couple or anyone looking for a "lap dog"
http://www.youtube.com/watch?v=zDcroDSmEkY (a good choice for the song in the background)