SportsCenter has been making the same type of ad for years: quirky, behind-the-scenes video snippets from ESPN’s headquarters featuring weird vignettes like SportsCenter anchors competing in mustache contests with mascots, athletes wreaking havoc in the newsroom and staffers finding themselves in baseball-like rain delays and perfect game scenarios.They’re essentially dry, micro mockumentaries in the style of Christopher Guest. Somehow, these spots are still just as sharp as when they began in 1994. This year, ESPN turned nerdy, funny-looking, middle-aged NFL analyst John Clayton into a long-haired fan of death metal who lives with his mom. The ad received glowing reviews online and was viewed 2.5 million times in its first two months. It’ll likely go down as a “This is SportsCenter” classic.