"Actually, at first, I had no idea who Justin Timberlake was," he said before Timberlake jokingly interjected, "You're aging me."
But Allen appreciated everything he learned from his superstar co-star. "It was amazing working with Justin, I think, obviously. One of the best parts about working with Justin is the experience that I got with him," he noted. "All the notes, all the jokes, all the, just experience, including, I think, which is a day-to-day friendship between us. ... He's my best friend, best movie friend."
Besides promoting Palmer, Timberlake will be performing his new song "Better Days" alongside Ant Clemons on Inauguration Day on Jan. 20 during the Celebrating America special, with Tom Hanks hosting. Demi Lovato and Jon Bon Jovi will also perform. He posted a behind-the-scenes clip of him and Clemons riffing and beatboxing in the studio while working on the song, which he described as "our way of doing what little we could to encourage everyone to stay hopeful and to keep working towards a better future."
"Between the film and the inauguration, it feels like hopefully the theme of 2021 is redemption," JT noted. "Incredibly excited. What an honor. We got the phone call to be asked for that, and I was like, 'Ugh, yes?'"
Watch Timberlake and Allen's TODAY Show interview below.