tonight, ge hackman's cause of death revealed. the acting giant and star of classics like the french connection. >> all right, nobody move. put your hands in the air. >> and superman. >> it's kryptonite. superman. i spared no expense to make you feel right at home. >> found lifeless in his home along with his wife. what we're learning tonight. plus, abracadabra. going gaga for lady gaga. casting a spell with her new hit, abracadabra. abracadabra. one on one with our michael strahan. >> returning to pop music for me was a little bit like something i was afraid of. >> pulling back the curtain on her album mayhem a return to her roots. >> immediately, lady gaga was just cranking out hit after hit. paparazzi. poker face. >> bop bop bop bop bop bop bop bop. her face. >> with new pop music and a new love. >> is my best friend. i think i wanted marriage and kids more than anything. >> and now, reaching back to the signature sound of her iconic chart toppers like that first big hit, just. >> dance, just dance gonna be okay. gotta do it. j