Based loosely off the book How to Train Your Dragon by Cressida Cowell, the 3D computer animated film was released in 2010 as a huge box office success. DreamWorks earned nearly $500 million worldwide after its release, not bad for producing the film for $165 million. How to Train Your Dragon features prominent voice actors as well, including Jay Baruchel, Gerard Butler, Craig Ferguson, America Ferrera,Jonah Hill, and Kristen Wiig. Already, a TV series and a video game have been released. Plus, a sequel is due out in June 2014. Talk about a success!