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'The X-Files' (1997)
The plot: In "Leonard Betts," Paul McCrane guest-stars as a decapitated man able to regenerate his body. / How many watched: 29.1 million / Touchdown or fumble: Touchdown. Taking a break from the show's dense mythology paid off, resulting in the most viewers ever for the series. Despite "The X-Files'" success, though, up until 2008 FOX used all its other Super Bow< lead-ins to air comedies.