Rank 'Em: NFL's greatest quarterbacks
Created: January 23, 2008, 12:09 PM
Who sits atop your depth chart of all-time quarterbacks?Quarterbacks have been slinging passes and leading teams to championships since the earliest days of the NFL, but who are the best to ever take a snap and scan a secondary? Tom Brady will certainly boost his case as the best of all time if he leads the Patriots to a win against the Giants in Super Bowl XLII, but is he still chasing legends like Joe Montana, Otto Graham and Johnny Unitas? We've assembled 20 of the best quarterbacks of all time, but setting the depth chart is up to you, SportsNation. You must rank at least five quarterbacks for your ballot to count.