Wow. I love that guy. I think I have told this story here before, but I do believe this is apropos in this thread:
We were at Steelers training camp and Harrison came down the step by the facility. He had his usual demeanor of appearing as if the was going to rip somebody's head off and not even change expression. My girls, then somewhere around 5 and 8, were leaning over he crowd tape with their hands out. It looked as if he was going to walk by, but he ever so deftly changed direction and gave them each a high five. The man never even changed his expression. My girls still talk about that. I thought it was a nice gesture on his part, while still keeping his iron-like-stolid persona intact.