Actor-filmmaker John Krasinski shared how he managed to get major stars to sign onto the project, IF. During his appearance on Jimmy Fallon’s talk show, he shared, “I got to say, the most yeses of my career was on this movie and the fastest yeses because they all love the idea of imagination, going back to your childhood.”

When discussing the ice cube, voiced by Bradley Cooper, Krasinski explained, “I don’t know why, but when I created this guy, in my head, I was like, ‘He’s from Philly, and he’s a little bummed to be living in Arizona.’”