Deep down, we always knew Christopher Walken was an *NSYNC fan.
The 73-year-old actor was the surprise guest in Justin Timberlake's Super Bowl commercial for Bai Antioxidant Infusions, where he lent his Walken-esque delivery to the pop group's classic hit, "Bye, Bye Bye."
Perfect. If we ever do get that *NSYNC reunion, now we know who to bring in for a guest feature.
What's your favorite Super Bowl commercial of all time?
Watch the video below to see some of the best.