As noted by the actor/producer, making these moments in the film coalesce in post-production required detailed planning and specificity – and as though that weren’t tricky enough already, there was also his preferred way of working that had to be factored in. Fans of Rogen know that improvisation has always been an important part of his process, and while he’s formed double acts with some of the funniest people in the industry, including Bill Hader, Paul Rudd, and Rose Byrne, riffing opposite himself was a whole new ballgame.