February 24, 2015 10:30 AM EST

NBC will depart from the small town of Pawnee forever on Tuesday when Parks and Recreation airs its final episode. Though the show never managed to cadge the ratings that critics thought it deserved, some of Hollywood’s sharpest comedians and D.C.’s most powerful politicians knew the value of the Amy Poehler comedy, making guest appearances in and out of character.

Here are some of the more memorable cameos from the show’s seven seasons.

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Write to Eliana Dockterman at eliana.dockterman@time.com.

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