The 1995-1996 Chicago Bulls won their 70th game of the season, breaking the old record held by the 1971-1972 Lakers. The Bulls went on to win 72 games. It's an impressive mark, but it won't stand forever; the Pistons, Spurs and Mavericks all came relatively close this season, and it's just a matter of time before it falls.
But what I would like to point out is that this happened a DECADE ago, ten years!! I remember them doing this, and have trouble wrapping my mind around the fact that it was TEN years ago. Lebron was what in 5th grade? Dubya was still a young governor. And no one knew who Monica Lewinsky or Mahmoud Ahmadinejad was....the good old days.