Heath Ledger

After a notable turn in his native Australia's "Blackrock" (1997), Ledger went on to stardom by way of leading roles in "10 Things I Hate About You" (1999), "The Patriot" (2000) and "A Knight's Tale" (2001). Though he languished a bit in little-seen features like "The Four Feathers" (2002) and "Ned Kelly" (2004), Ledger exploded into a bona fide star with his Oscar-nominated turn as a closeted homosexual ranch hand in Ang Lee's acclaimed …