Super Bowl V

Per Wikipedia: "Super Bowl V is the last Super Bowl to have had the majority of its telecast wiped. The complete original broadcast of the first, second, and third quarter exists, however the fourth quarter is missing."

It's going to be great when spaceflight becomes sufficiently commercialized for YouTube to send up a rocket and recapture a bunch of the "wiped" TV shows that are still out there somewhere floating around. Until then, we'll just have to enjoy as much of Curt Gowdy and Kyle Rote as we still have.