Three times .... 1971-1974 under George Allen and 1982-1984 and 1990-1992 under Joe Gibbs.
8
The Cowboys have appeared in the playoffs 30 times between 1966 and 2009.
Twice. They defeated Tampa Bay in 2005 but then lost to Seattle, and they lost to Seattle in 2007.
The past 30 years would be from the 1980 season. The Steelers made the playoffs 17 times since 1980.
The Jacksonville Jaguars have Been to the playoffs once.
They have made the playoffs six times 1999-2009, with a record of 4-6; they reached Superbowl XL in 2005 but lost to the Steelers.
They have been to the Stanley Cup finals 4 times and countless playoffs.
The Miami heat been in the NBA playoffs 4 times
Through the 2012 season, the San Diego Chargers made the playoffs 17 times.
27 times
1
56