Dwight White, Pitt vs. Minn, IX Reggie Harrison, Pitt vs. Dal, X Henry Waechter, Chi vs. NE, XX George Martin, N.Y.G. vs. Den, XXI Bruce Smith, Buf vs. N.Y.G, XXV
According to NFL.com, the most points scored in one game was by the Washington Redskins who beat the N.Y. Giants 72-41 in 1966.
In the NFL, there are four quarters of 15 minutes each. So that's 60 minutes of actual play time. As for why a televised football game takes 3-4 hours to watch, you'd have to ask the advertisers. As for actual action in a game, that generally is 12-15 minutes.
Per my husband, an avid football fan, the oldest NFL player of the 2005 season is Vinnie Testerverti. He was unsure of the proper spelling of the last name. I phonologically typed it out. Hope this helps.