Andy Whitfield, 39 Years Old
The "Spartacus: Blood and Sand" actor initially studied construction at trade school before making the jump into acting and landing a lead role in the STARZ channel series. However, he had to postpone filming the Spartacus prequel series due to a cancer diagnosis. When he was declared "cancer-free," a follow-up scan revealed a relapse less than a year later. In 2011, he died just 18 months after his initial diagnosis.