Crazy Frog is a computer animated character originally known as The Annoying Thing and created by Erik Wernquist. But apparently he’s not so annoying. The Crazy Frog ringtone in the UK is the most commercially successful ringtone of all time, and Crazy Frog had a worldwide hit single with a remix of “Axel F.” There is also a range of Crazy Frog merchandise, toys, and video games. And, of course, YouTube videos. You can’t be successful these days without a YouTube video. The video below shows Crazy Frog in action to the tune of “Jingle Bells.”