No two organizations had longer bouts of success than the Cowboys and Raiders from the mid-1960s to the mid-1980s. How's this for a catalogue? From 1965 to 1985, Oakland sustained one losing season. Total. (They went a middling 7-9 in 1981.) Dallas started a unique streak of its own in 1966, going 20 straight seasons without a losing campaign. During this incredibly prolific window, the two franchises combined for nineSuper Bowl berths and 23 championship-game appearances. Six times, the Cowboys and Raiders played in the championship games of their respective conferences/leagues in the same year (1967, 1970, 1973, 1975, 1977 and 1980) -- but not once did they both advance. 1977 would have been the year for it to happen. Oakland had just won it all for the first time under John Madden's stewardship the year prior, romping through that '76 season to a 13-1 record before dominating the Vikings in Super Bowl XI. Oakland followed up by going 11-3 in '77, while Dallas was the top team in the league at 12-2. Madden's outcasts and partiers were everything the buttoned-up Cowboys weren't, at least in the public eye. However much milk quarterback Roger Staubach drank, Stabler matched him in bourbon. Dallas was corporate, Oakland went mullet. One was silver and royal blue, the other silver and pirate black. They truly were studies in contrast ... and greatness.