Some old Vikings games thanks to youtube. Complete with commercials and the old announcing crews (OJ is in the booth for the bears game). These games are also before the modern NFL took some of the nasty hits out. Players were still allowed to celebrate back then too. Something to break up the wait before preseason 2012:
1972-11-26 Vikings vs Steelers 1st Half
1972-11-26 Vikings vs Steelers 2nd Half
1976 Rams vs Vikings (complete game)
1977 NFC Championship Minnesota vs Dallas (complete game)
1985-09-19 Chicago vs Minnesota 2nd Quarter