An excerpt: "In 2008, NFL Films debuted a special entitled, "Top 10 Records That Won't Be Broken." The No. 2 choice? Johnny Unitas' streak of 47 consecutive games with a touchdown pass. The record, which had stood for 48 years, was placed on par with Joe DiMaggio's 56-game hitting streak in baseball. The closest anyone had come to Unitas' mark was Brett Favre's run of 36 games, which ended in 2004. In an era of increased injuries and ubiquitous parity, it seemed safe forever. In 2012, four years after the NFL Films special, Drew Brees blew by Unitas and pushed the record to 54 games. One year after that, Tom Brady made it to 52. And earlier this season, Peyton Manning's streak ended at 51." http://espn.go.com/nfl/story/_/page/hotread141217/nfl-statistics-quarterbacks-devalued-era-favoring-offenses "Records are meant to be broken, of course. But they should also provide structure for comparing different eras, a task rendered nearly impossible by the NFL's most recent passing explosion. Effectively, we're in the midst of the NFL's "Steroids Era," a time when an above-average performance exceeds the best in history and an elite one obliterates it."