The Backstory:

Hollywood's Biggest Stars Get Silly on El Hormiguero!

Stars often travel to Europe promoting new music, projects, and films, and one of the popular places to stop is Spain's El Hormiguero. The daily program focuses on comedy and science and gets the guests to join in the fun. Click through to see Jennifer Aniston, Bradley Cooper, Chris Hemsworth, Justin Bieber, and more testing their hand at magic, card tricks, and crazy experiments!