Jensen Ackles put on a show for fans at the Supernatural convention in Las Vegas on Saturday, playing a cowbell to his own beat. Jared Padalecki, who costars with Jensen on their popular CW show, joined the actor on stage for the playful appearance. The real-life buddies have been hard at work filming upcoming episodes. Most recently, Jensen showed off his signature smirk  while facing a torrential downpour. It's just one of several GIF-worthy faces  the actor has given us over the years. Keep reading to see Jensen and Jared get in on the convention fun!