At Long Last Leave

Television critics have given the episode generally positive reviews, particularly praising it for a montage of the series' couch gags that was included in the opening sequence.

During its original airing on the Fox network in the United States on February 19, 2012, the episode was watched by about 5.77 million people and received a 2.6 Nielsen rating in the demographic for adults aged 18–49.

Before this broadcast, Fox promoted the 500th episode milestone by arranging an attempt to break the Guinness World Record for longest continuous television viewing.

Mayor Quimby reveals that the city has gone bankrupt due to the constant cleaning up of the family's shenanigans over the years, ranging from Homer's drunken antics, Bart's various pranks, and Lisa's environmental concerns.

A big celebration is held by the city's population as the Simpsons are officially evicted from Springfield, which Ned and his family refuses to attend after withdrawing their objection.

She also claims the Outlands' townsfolk are much better as a community then the residents in Springfield because they encourage the Simpsons to be themselves and to explore their interest without worry of hate, judgment and resentment from others.

As Marge and Homer march through the visibly disillusioned crowd and return to the Outlands, the citizens regret exiling the Simpsons and realize they must do something to win them back.

[3] Price did not write "At Long Last Leave" with the intention of it becoming the 500th episode; that decision was made afterwards when the staff members realized the story offered an opportunity for a look-back at the history of the Simpson family.

[4] The episode features several guest appearances, with Kelsey Grammer and Jackie Mason returning as Sideshow Bob and Rabbi Krustofski, respectively.

[5] American musician Alison Krauss and her band Union Station recorded a bluegrass version of the Simpsons theme song that is played in the episode and over the closing credits.

"[9] In 2010, Swedish authorities issued a European Arrest Warrant to extradite Assange from Britain to Sweden for questioning in relation to sexual assault allegations made against him there.

[8] Jean, who directed Assange's performance from Los Angeles, only acquired a phone number to call and received no information about the whereabouts of the activist.

According to Jean in an interview with Entertainment Weekly, The Simpsons creator Matt Groening had found out through a rumor that Assange wanted to appear on the show.

[8][15] It was watched by approximately 5.77 million people during this broadcast, and in the demographic for adults aged 18–49, it received a 2.6 Nielsen rating and a seven percent share.

[17] "At Long Last Leave" has received generally positive reviews from television critics,[19] particularly for its couch gag in the Simpsons opening sequence.

Club critic Hayden Childs wrote that the "best thing about the 500th Simpsons episode is the opening couch montage, which hits the nostalgia bullseye almost perfectly.

[22] Matt Roush of TV Guide wrote favorably about "At Long Last Leave", describing it as a "keeper" and highlighting the "dazzling opening sequence".

"[23] Childs was less positive, writing that the episode is "nothing special" as "all of the elements seem drawn from earlier stories" and "only a few of the jokes rise to the lowered bar of latter-day Simpsons humor.

There is little Family Guy-style stupidity and randomness, the satire is gently pointed inward, and the guest star, while splashy for his controversiality, does not hijack the plot—instead appearing for a single joke before vanishing.

"[20] Time critic James Poniewozik commented that "At Long Last Leave" was an "all right" episode, noting that certain gags felt "forced by the writers' room".

Julian Assange , the founder of website WikiLeaks , appeared in the episode.
Fans of The Simpsons were invited to watch a marathon of the series' episodes at Hollywood & Highland .