When I was young, my dad would take me to a lot of baseball card shows for autographs. One of my friends was a huge Reds (and hence Pete Rose) fan, so we got tickets and went to the card show. Every other show I've ever been to the player would at least look up and acknowledge you when you got to the table. Not Rose. Head down, signing and on to the next, as fast as he could. My friend tried to say something to him about being a huge fan, and got no response whatsoever. Not even a glance up or a nod.
Pales in comparison to all of the other "bad guy" stories about Rose, I know.