Watch John Krasinski surprise grads with Jon Stewart, Oprah, and more commencement speakers
Ryan Reynolds and Samuel L. Jackson also made cameos during the feel-good episode.
Bruce Springsteen, Jon Bon Jovi deliver classic tunes during 'Jersey 4 Jersey' benefit concert
Steve Carell, Rose Byrne clash politics in Jon Stewart's Irresistible trailer
Seeing Stars: Idina Menzel, Taylor Swift, J.Lo, and more great celebrity photos
Stevie Wonder, Chance the Rapper, and more perform at Dave Chappelle concert honoring Dayton victims
Jon Stewart reunites with Stephen Colbert to call out Mitch McConnell on 9/11 bill