The Cowboys have missed the playoffs for three straight years - 2010-12. The Patriots last missed the playoffs in 2008.
The most consecutive years the Dolphins made the playoffs is 5 and they have accomplished that three times.1970-1974, 1981-1985, and 1997-2001.
They buy new players each year.
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.
The Yankees made the playoffs 14 times from 1995 to the present, including 13 straight years (1995-2007). They missed the playoffs in 2008 and then won the World Series in 2009.
The Utah Jazz have, and by far. The Raptors have barely gotten anywhere in the playoffs. The Jazz, on the other hand, have been contenders in the playoffs for years. They have also had two of the best players in the league in John Stockon and Karl Malone.
The St. Louis Blues have appeared in the Stanley Cup Playoffs 38 times, with a streak of 25 straight years in the playoffs from the 1979-80 season through the 2003-04 season. It should also be noted that the Blues reached the Stanley Cup Finals their first three seasons as a team in the NHL (1967-68, 1968-69, and 1969-70), but have not been able to go as deep into the playoffs since.
The Atlanta Braves franchise has appeared in 9 World Series, and won three World Series titles in three different cities.
7 years
The Phoenix Cardinals never made it to the playoffs in the 6 years they were around.
The Cowboys have appeared in the playoffs 30 times between 1966 and 2009.
the Patriots