Most actors (with the exception of Air Bud) are terrible athletes. That's why recreating the intensity and excitement of history's greatest sporting events on the big screen is usually a fail. And that's also why sports documentaries have always styled on glossy Hollywood portrayalsâ€”the documentary Dogtown and Z-Boys versus the feature film Lords of Dogtown is the perfect example of such styling. The 2013 Oscars are tonight at 8:30 p.m. and last year Undefeated, the story of the 2009 Manassas Tigers won Best Documentary. So before you get all hype for tonight's big event, check out the 25 Greatest Sports Documentaries of All Time.