Season 20 is a landmark season, primarily because it marks the show's transition to High Definition. Debuting in February 2009 with "Take My Life, Please," the visual overhaul was jarring for long-time fans. The opening sequence was remastered (and eventually tweaked to include the famous "couch gag" variations), and the color palette became significantly brighter and more saturated.

By season 27, the show stopped trying to be "the best show ever" and settled into being "your reliable uncle." It is comfortable. Safe. Watchable.

Seasons 20–27 saw the writers integrating and social media into the fabric of Springfield.

The stretch comprising represents a specific, fascinating epoch in the show's history. Spanning from 2008 to 2016, these seasons mark the transition from the controversial "Mike Scully Era" into the long-standing stewardship of Al Jean, the showrunner who would define the modern Simpsons. This period saw the show transition to High Definition, switch from traditional cel animation to digital ink-and-paint, celebrate its 500th episode, and face the harsh reality of a changing media landscape.

Character assassination (intentionally) and timeline breaks.

Meta-humor. The writers began referencing the show’s declining quality within the show. In "The Real Housewives of Springfield," Marge directly quips about the show running too long.

Season 20 was a landmark for the series, serving as the bridge between the traditional 4:3 aspect ratio and the modern 16:9 HD era. The premiere of the HD format in "Take My Life, Please" (2009) introduced the first new opening sequence in two decades.

Season 21 is famous for one thing: Breaking the record for the longest-running primetime scripted series (surpassing Gunsmoke ). However, creatively, it is a mixed bag.

Nostalgia and experimentation. This season includes a full-length Futurama crossover episode.

The Simpsons Season 20 21 22 23 24 25 26 27
The Simpsons Season 20 21 22 23 24 25 26 27
The Simpsons Season 20 21 22 23 24 25 26 27
The Simpsons Season 20 21 22 23 24 25 26 27