As of the start of the 2008 season, the best franchise regular season winning percentage is .580 for the Miami Dolphins (369-267-4). The Dallas Cowboys are second at .578 (414-302-6).
Chicago bears
The winner of the most Army vs. Navy football games since 1970 is the Navy. They are 26-14-1 against the Army since then, with the tie being in 1981. The Navy has won the last 12 straight games against Army.
Yankees
The Steelers.
Cleveland Cavaliers
Chicago bears
The Michigan Wolverines won 869 games
Alabama
Michigan Wolverines
The Dallas Cowboys have won the most, 32 NFL post season games.
Steelers
usc
The Michigan Wolverines (869 wins - 74.5%)
Pittsburgh Steelers.
Florida Gators
The Chicago Bears have won 709 games as of the start of the 2010 season.
Green Bay Packers - 96