Heath Ledger had an amazing film career that was cut short by tragedy, but his best works will always be a reminder of what once was. Although he started out as a teen heartthrob, he quickly switched to sizzling sex god - even if it wasn't really on purpose. In Monster's Ball (2001), Heath gives us a peek at those bubbly cheeks as he pounds a hooker from behind, and then in Brokeback Mountain (2005), he partnered up with Jake Gyllenhaal to show us what true bromance looks like. It's scenes like these, and of course his great acting skills, that make Heath Ledger an unforgettable on-screen legend.