the Cowboys' all-time playoff record is 33-25.
which NFL team beat the Miami Dolphins in the 1999 playoff game
Titans.
the New England Patriots had the best record in 2010 (14-2)
The 1972 Miami Dolphins are the only team to go through a season undefeated. Their regular season record was 14-0 and they won their two conference playoff games and the Super Bowl to wind up 17-0.
There is no rule for how many wins are needed to be in the playoffs. The more wins the better but, the team only needs to be a division leader and therefore automatically given a playoff spot.
It depends upon the league/sport. In the NFL, for example, the team with the best overall record wins their division. In the event of a tie, the division record acts as the tiebreaker. I believe the best conference record wins the conference in NCAA Football, regardless of overall record. Then there are the league like the NHL, where a team earns 2 points for a win, 1 for a tie or post regulation loss--with the team accumulating the most points winning their division/conference.
The team with the best regular season record in 2004 was the Pittsburgh Steelers at 15-1.
The NFL.
pittsburgh
Chicago Bears
Very little since they pretty much stink as a football team in the NFL. Their all time playoff record is 7-10. They won the NFL championship in 1935, 1953, 1954, and 1957. Since 1958, they have made the playoffs 9 times and won 1 playoff game.