On Friday, Jeremy F. Koo brought to our attention that Grammy-winning singer Bruno Mars rocked an Oakland A's hat in his announcement that he would be performing at Super Bowl 50 in Santa Clara. In fact, it's not the first time he's been seen in A's gear, and although he has also repped many other teams in public I don't think it's a stretch to suggest (or at least hope?) that he counts the green and gold among whatever sports fandom he might have.
That got me thinking. What other celebrities count themselves as A's fans?