Just got done working chest. I tried lifting my ribcage on flat bench, incline, and DB incline presses. It really puts the majority of the emphasis on the pecs rather than the anterior (front) deltiods. What seems to happen is on the last 1/4 of the movement the pec continues to contract rather than letting the triceps & shoulders kick in. Pumptastic! Most noticable improvement was on flat bench. Put your feet down, lay back on the bench, put a moderate (not insane) arch in your back, then keep your chest high throughout the set.
Try this and I bet you Federov's left pec your chest will swell after 1 hard, controlled set! Please let me know if you guys have any other tips like this one.