Matt Damon cracks jokes about starring in "Air" directed by his longtime friend Ben Affleck. Taylor Swift, H.E.R. and more of Hollywood's biggest names attend the iHeartRadio Music Awards. Netflix's "Firefly Lane" star Katherine Heigl teases the importance of the series' last season. Plus, she talks the possibility of expanding her family with husband Josh Kelley. Plus, "The Super Mario Bros. Movie" stars Chris Pratt, Charlie Day and Seth Rogen bring us back to their love of all things Nintendo.

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