http://www.boston.com/sports/other_sports/gallery/02_13_08_grossfeld_thinking_well?pg=29So it turns out our own Lucky the Leprechaun was once. I couldn't find another source indicating when and what specific event.
My brother used to tell me he was pretty sure when they signed Lucky they just drove a car down to South Boston and picked the most acrobatic fan. Apparently there was a little more logic behind the decision.
Anyways, just thought it was interesting.