Here's a very useful tip for Act 5 in ROS. Some of the larger carts and destructibles in Act V can hold chests underneath them. You can find resplendent chests by flipping over carts and breaking other destructibles.
Also note that there are alot of pots and chests in the graveyard and in the earlier parts of the act.
So don't skip over breakable items anymore, since they can yeild some really great things! (like legendaries)