20th Century Fox has debuted the first official trailer on Facebook for Matthew Vaughn's X-Men: First Class, the comic book-inspired prequel starring an awesome ensemble cast of fine, young actors. James McAvoy leads the way as Charles Xavier, and Michael Fassbender as Erik Lehnsherr, who search and collect a group of young mutants including: January Jones as Emma Frost, Jennifer Lawrence, Rose Byrne, Nicholas Hoult, Zoe Kravitz, Jason Flemyng, Lucas Till and Edi Gathegi. It looks pretty damn cool, I'm sold!