VIDEO: Josh Gad Appears in Surprise Hand Jive Performance on DANCING WITH THE STARS!

On last night's DANCING WITH THE STARS, one of the commercial bumper dance number featured "The Wedding Ringer" co-stars Josh Gad and Kevin Hart. Hart was serving as a guest judge on the Movie Night-themed episode of the ABC dance competition.

Prior to the live show, Hart and Gad spoke to ET's Kevin Frazier about the amount of rehearsal time their routine took to learn. The funnymen went on to show off their musical talents, including Gad performing a few bars from a new play he is working which he calls "Working With Kevin Is The Hardest Thing I've Ever Done."

Check out the duo's lively hand jive performance as well as the interview below!

About THE WEDDING RINGER

Josh Gad (Broadway's Book of Mormon, Spelling Bee) and comedian Kevin Hart star in the new comedy THE WEDDING RINGER from Sony Pictures Entertainment. The film hits theaters on January 16, 2015.

Directed by Jeremy Garelick and written by Garelick and Jay Lavender, The Wedding Ringer also stars Kaley Cuoco-Sweeting, Ken Howard, Cloris Leachman, Jenifer Lewis, Mimi Rogers and Olivia Thirlby

In the film, Doug Harris (Josh Gad) is a loveable but socially awkward groom-to-be with a problem: he has no best man. With less than two weeks to go until he marries the girl of his dreams (Kaley Cuoco-Sweeting), Doug is referred to Jimmy Callahan (Kevin Hart), owner and CEO of Best Man, Inc., a company that provides flattering best men for socially challenged guys in need. What ensues is a hilarious wedding charade as they try to pull off the big con, and an unexpected budding bromance between Doug and his fake best man Jimmy.