Bradley Cooper is the latest celebrity to join in the fun on Spain's El Hormiguero TV program yesterday. Orlando Bloom was recently coaxed into wearing a blond wig, and Jennifer Aniston planted a kiss on the famous purple ant puppet during her visit. It seems Bradley was willing to blow up balloons and play games while chatting up his latest blockbuster, Limitless. The film was box office champion for its opening weekend in the States, and now he's in the midst of promoting the thriller overseas. Meanwhile, Bradley inadvertently pulled an early April Fools' joke last week when he teased that The Hangover Part II trailer was going to drop today, but it actually was released last night — check out the wild and crazy preview on Buzz!