Los Angeles Rams
After the 1994 NFL season, the Rams left California and moved to St. Louis, Missouri. Five seasons after relocating, the team won Super Bowl XXXIV in a 23–16 victory over the Tennessee Titans. They appeared again in Super Bowl XXXVI, where they lost 20–17 to the New England Patriots. The Rams played in St. Louis until the end of the 2015 NFL season, when they filed notice with the NFL of their intent to relocate back to Los Angeles. The move was agreed at an owners' meeting in January 2016, and the Rams returned to the city for the 2016 NFL season.
1978 Dallas Cowboys season
There was a lot of bad blood between the Dallas Cowboys and the LA Rams prior to their '78 NFC Championship contest. Both the Cowboys and Vikings shared a common recent history of eliminating the LA Rams from the playoffs throughout the 1970s, consigning the Rams to being labeled, "next year's champions" for nearly a decade. So, when the undefeated (2-0) Dallas Cowboys traveled to Los Angeles to play the undefeated (2-0) Rams during week-3 of the 1978 regular season, the Rams not only wanted to win the game for a measure of revenge over the Dallas Cowboys, but also wanted to use a victory over last year's Super Bowl champions to make a statement to the rest of the league, "That the '78 season was the year the Rams finally win a championship".