Career: Walker first started acting on TV in 1985 with a guest role in Highway to Heaven. Other early TV credits included parts in Throb, Charles in Charge, Who's the Boss, The Young and the Restless and Touched by an Angel. He made his film debut in horror comedy Monster in the Closet (1986). He had supporting roles in Pleasantville (1998), Varsity Blues (1999), She's All That (1999) and The Skulls (2000). His big break came in 2001 when he starred opposite Vin Diesel in The Fast and the Furious. He returned to the Fast and the Furious franchise in 2 Fast 2 Furious (2003), Fast & Furious (2009), Fast Five (2011) and Fast & Furious 6 (2013). He had been filming Furious 7 (2015) when he died in an automobile accident on November 30, 2013 at the age of 40. His other film credits include Running Scared (2006), Eight Below (2006), Flags of Our Fathers (2006), Hours (2013) and Brick Mansions (2014).

Career: He went on to work in TV in such series as Private Eye and The Young Riders and appeared in a number of big-screen flops until he was finally noticed for his supporting role in Grindhouse (2007). In the same year he also starred in American Gangster and In the Valley of Elah. Since then, he has appeared in a number of prominent films, including No Country for Old Men (2007), W. (2008), Milk (2008), Wall Street: Money Never Sleeps (2010), True Grit (2010), Men in Black 3 (2012), Gangster Squad (2013), Oldboy (2013) and Labor Day (2013).