One look at Abhishek Bachchan’s career shows that during the tough times his lucky charm has indeed been Pa. Amitabh not only gave his son the first solo hit he had in Bunty Aur Babli, but every time father and son did a film together, wonders happened at the box-office. We don’t think Big B needs any charms, lucky or otherwise, but Abhi does his bit to stick by his Pa, too. Abhishek recently shot a promo with Amitabh for their home production Bbuddah Hoga Tera Baap. Not only do they boogie on camera, Jr B has accompanied Big B on the vocals as well. Unlike other father-son duos, the Bachchan men are extremely comfortable sharing screen space and, much to the dismay of their female counterparts, share a great chemistry.