1. Ludwig van Beethoven

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. 25 February 2016

Given a hearing aid, Beethoven hears some of his most famous compositions for the first time.

2. Ernest Hemingway

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. 3 March 2016

Dan attempts to bond with Hemingway over their common interests in drinking and writing, but is intimidated by his masculinity.

3. Thomas Edison

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. 11 March 2016

Unsatisfied with the quality of his phonograph recording, Edison insists on recording a new version in a modern studio.

4. Mary Wollstonecraft

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. 18 March 2016

Mary's arrival gives Dan a chance to express his feminism, but he is irritated by Mary's stern demeanor. Meanwhile, it is Spencer's birthday.

5. William Shakespeare

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. 24 March 2016

Shakespeare is unimpressed by Community, preferring the bawdy comedy film Dirty Grandpa.

6. Idi Amin

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. 31 March 2016

Amin's arrival fulfills Dan's desire for ethnic diversity, until he takes the office hostage.

7. Betsy Ross

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. 14 April 2016

Betsy's racism discomforts Dan until they broach the subject of Bernie Sanders.

8. Amelia Earhart

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. 21 April 2016

Amelia is disappointed with her legacy of getting lost, and sets out to prove that she is indeed still alive.

9. Sigmund Freud

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. 28 April 2016

Freud arrives just in time, as Spencer refuses to use catchphrases written for him by Dan.

10. Edgar Allan Poe

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. 5 May 2016

Poe undermines Dan's need to impress a History Channel executive, who falls for Poe. Dan and Spencer attempt to influence their date to secure an additional run of episodes.

11. Buddha

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. 10 June 2016

The Buddha participates in a series of product placements, making Dan feel guilty.

12. John Wilkes Booth

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. 17 June 2016

Booth emphasizes his skills as an actor rather than his notoriety as the assassin of Abraham Lincoln.

13. Ada Lovelace

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. 25 June 2016

After they bond over their shared love of coding, Ada convinces Spencer to convert his body to code and join her in virtual reality.

14. John F. Kennedy

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. 1 July 2016

Kennedy is accidentally transported along with a spider, creating an additional half-Kennedy-half-spider being which cocoons the crew.

15. Harry S. Truman

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. 16 July 2016

Dan takes Truman to a gay bar to teach him about gay rights and desperately pander to LGBT critics.