This year's Comic-Con in San Diego, Calif., went off without a hitch over the weekend, as attendees were treated to cool behind-the-scenes-stuff, celebrity interviews and much more.

But arguably one of the coolest moments is when Biz Markie came out of nowhere to sing his classic cut 'Just A Friend,' and he got a little help from actor Channing Tatum.

The moment occurred while 'Magic Mike' star joined Christina Applegate, director Jorge Gutierrez and others to discuss the up and coming animation flick 'The Book of Life.'

While Gutierrez was explaining how he chose some of the music for the film -- 'Just A Friend' being one of them -- the always entertaining Biz took the stage, rocking the dopest Dana Dane T-shirt too. From there, the Juice Crew member did his best to hit every note off key, just the way his fans like it.

And it didn't take long for the hip-hop-loving Tatum to leave his seat, throw his hands in the air and sing along with the rapper.