Aspiring Broadway types, Riverdance wannabes, epileptics and the curious take note: The shops at Mansfield Crossing will be hosting a “Papelbon Dance Contest” today from 12:30pm to 1:30pm near the Sports Authority store (I assume in some kind of tent, but what do I know?). If this was being held within a 2-mile radius of Kenmore, the place’d be packed with half-sloshed college chicks; alas, that far out on the 495 belt, the best you’ll do is probably some 40-something moms coaching their 6-year olds to “dance like that Red Sox guy.” Jim Lonborg will also be there from 2-3pm to sign autographs. For the time-machine-enabled, Manny Delcarmen was there yesterday from 5-7pm.