January 15, 1967--the first Superbowl.
Green Bay Packers vs. Kansas City Chiefs
I couldn't insert a shorter clip, but the Green Bay Packers won 35 to 10. There are no tapes of the entire game in existence--networks recorded over them--tapes were very expensive during that time and the networks didn't really think the Super Bowl would become as big as it has become.
Read more about the First Super bowl on Wikipedia (if you're not too good for Wikipedia).