We went to a fan fest a couple years ago, and she was pretty bored. We waited in line for some autographs (including Jamaal's), and she was pretty entertained by Jamaal dancing around the whole time. When we finally got to the front of the line, he came around the table and danced with my daughter for like 30 seconds (maybe he saw her watching him so much or something). She will always remember that.
His pregame ritual of throwing passes to kids in the crowd is great, too.