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By Jillian Sederholm

"Saturday Night Live" concluded its 41st season on Saturday with some help from casts of seasons past.

Musical guest Courtney Barnett, host Fred Armisen, and 'SNL' cast member Bobby Moynihan.NBC / Dana Edelson/NBC

The finale was hosted by Fred Armisen, who was on the show from 2002–2013 but has popped up a few times since, including to introduce a tribute to David Bowie after the singer's death in January.

Armisen was joined in the season ender by several of his former castmates, including Andy Samberg, who starred in a new Lonely Island digital short about a sexual fetish involving Osama bin Laden. Armisen also appeared in the video.

Jason Sudeikis turned up as the partner of Armisen's Regine, an easily excitable character Armisen had portrayed twice during his time on the show. The cast struggled to contain their laughter as Armisen flailed around wearing stockings and a mini skirt in the sketch.

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Maya Rudolph also popped up during Weekend Update, playing recently impeached Brazilian President Dilma Rousseff alongside anchor Colin Jost.

Larry David, who feels like an honorary cast member after appearing on several episodes this season, including a memorable turn as host, was also on hand in what could end up being his final portrayal of Bernie Sanders — depending how the presidential race plays out before the show returns this fall. David as Sanders opened the show by sharing a dance with Kate McKinnon playing Hillary Clinton.

Grammy-nominated Australian singer-songwriter Courtney Barnett was Saturday's musical guest. The show's season 42 premiere date has not yet been announced.