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30. 'Mad About You' - The sitcom starring Paul Reiser and Helen Hunt ended after seven seasons, and 19.8 million people watched the finale.

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29. 'The Fresh Prince of Bel-Air' - After six seasons, 19.9 million people tuned in to watch the highly relatable characters all move out of the Banks Mansion to move on with their lives.

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28. 'Who's the Boss?' - The show starring Tony Danza as a retired-baseball-player-turned-housekeeper garnered 20.5 million viewers. 

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27. 'Quantum Leap' - The infamous series finale, in which they misspelled the protagonist's name, had a viewership of 20.6 million households.

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26. 'The Wonder Years' - After six seasons, the coming-of-age comedy-drama starring Fred Savage aired its finale on 21 million screens. 

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25. 'The Mary Tyler Moore Show' - The 168th episode of this iconic sitcom had a viewership of 21.16 million. 

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24. 'ALF' - The finale of this lovable alien comedy had 21.7 million viewers. 

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23. 'L.A. Law' - After eight seasons of exploring social and cultural ideologies, as well as hot-topic issues of the '80s and '90s, the show ended with an audience of 22.1 million viewers.

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22. 'MacGyver' -

A cool 22.3 million televisions saw the big twist where Sam, the young biker who helped solve a tough case, is revealed to be MacGyver's son!

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21. 'St. Elsewhere' - The groundbreaking urban medical drama starring Denzel Washington had an enormous plot twist in its finale, which must have shaken all 22.5 million viewers.

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20. 'Full House' - This two-part finale, where Michelle falls off her horse and wakes up with amnesia, had 24.3 million viewers reminiscing on the time spent in this idyllic house.

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19. 'The Golden Girls' - The heart-wrenching and hilarious end to this series, with one of the best mother-daughter duos, garnered a viewership of 27.2 million households.

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18. 'Happy Days' - The end of this show's nostalgic look at life in the '50s had 30.5 million people watching. 

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17. 'Gunsmoke' - After a whopping 20 seasons on air, 30.9 million households watched the unexpected finale—likely including the White House.

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16. 'Star Trek: The Next Generation' - Trekkies everywhere tuned in, about 31 million of them, to watch Captain Picard save humankind. 

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15. 'Everybody Loves Raymond' - By everybody, it likely means the 32.9 million viewers that watched the series finale. 

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14. 'Dallas' - About 33.3 million viewers hung on till the end of this show's 14 seasons.

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13. 'Frasier' - After 11 seasons, 33.7 million people tuned in to see Frasier make a surprising decision contrary to his plans to move to San Francisco.

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12. 'Home Improvement' - In the series finale, 35.5 million viewers finally got to see Wilson's full face for the first time. 

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11. 'Family Ties' - The last episode of the series starring Michael J. Fox had a viewership of 36.3 million households.

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10. 'All in the Family' - An impressive 40.2 million viewers tuned in to watch Archie and Edith finally make up.

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9. 'The Cosby Show' - America's favorite dad for eight seasons had 44.4 million viewers watching his last episode. 

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8. 'The Tonight Show Starring Johnny Carson' - Though it wasn't a primetime TV show, it still garnered a whopping 50 million viewers for its last show.

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7. 'Magnum, P.I.' - After killing Magnum when the show was canceled in its seventh season, fans protested and the show was brought back, revealing that Magnum had only dreamed his death! The real finale had 50.7 million people in its grip.

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6. 'Friends' - An expected 52.5 million viewers tuned in to watch Ross confess his love to Rachel, and see the result of Monica and Chandler's big decision to move to the suburbs.

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5. 'Seinfeld' - Though the finale had thoroughly mixed reviews, it still had an impressive viewership of 76.3 million. 

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4. 'The Fugitive' - The heart-pumping series finale is praised as an inspiration to many films and shows that followed, especially since 78 million viewers tuned in to see Richard Kimble finally stop running.

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3. 'Cheers' - The local bar where everyone knows your name closed its doors with a whopping 80.4 million viewers raising a glass. 

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2. 'Roots' - The miniseries that explored many notable events in American history had a particularly impressive viewership of 100 million households, especially considering it only ran for eight episodes. 

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1. 'M*A*S*H' - In what was up until 2010 the most-watched television event ever, this well-loved series that takes place during the Korean War ended with at least 106 million teary-eyed viewers tuned in. 

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