This post has not been vetted or endorsed by BuzzFeed's editorial staff. BuzzFeed Community is a place where anyone can create a post or quiz. Try making your own!Buzz·Posted on Dec 30, 2009The Best Trailer Mash-Ups Of All TimeAvatar + Ferngully, you guys.by Nick DouglasCommunity ContributorLinkFacebookPinterestTwitterMail The Best Trailer Mash-Ups Of All Time urlesque.com Just say yes.