David Cook breaks down the best moments of last night's 'American Idol'

NPC SYNC on Instagram: "The way Al Pacino played along with Robin Williams doing an impression of him behind his back was pure class. Pacino knew exactly what was happening, but instead of breaking or calling it out, he leaned into it like a pro. He kept a straight face, stayed in character, and let Robin run wild, which somehow made the impression even funnier. It felt less like a prank and more like two legends silently agreeing to elevate the bit. What makes it so good is the mutual respect u