The gold standard in TV farewells, from “Friends” to “Mary Tyler Moore.”

Series finales are tricky.

They can deliver a happy ending, properly tying up loose ends and giving viewers a sense of closure.

Friends series finale “The Last One”

The series finale of ‘Friends’.Credit: NBC

Or they can surprise, whether we’re talking about an unexpected twist or a famous cut to black.

We’ve rounded up 25 TV series that managed to stick the landing.

It was the poignant goodbye we wanted.

ER, Noah Wyle | 19. ER (1994-2009) No matter how many docs came through County General over the 15 years the show aired, it was the storytelling that made

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He became a true vigilante, claiming, ‘‘I am judge and jury.’’

AW

The Sopranos(19992007)

Who needs resolution?

Andhe did… sort of.

Kiefer Sutherland, 24 | 18. 24 (2001-2010; 2014-) We knew there’d be no happy ending for Kiefer Sutherland’s CTU agent, constant-savior-of-the-world Jack Bauer, but we did get to see

Kelsey McNeal/FOX

The teariest is saved for last.

(Mike Farrell): ‘‘Goodbye’’ spelled out in stones on the launch pad.

(There’s a reasonJason Katimswon an Emmy for writing it.)

Six Feet Under | 17. SIX FEET UNDER (2001-2005) With all its resolutions, new beginnings, and flash-forwards, the finale really seemed to neatly wrap-up the lives of the Fisher

Altogether, the finalecemented the show’s impact.

As Tim always put it, “Texas forever.”

(How’s that for a final bit of comedy?)

The Wire | 16. THE WIRE (2002-2008) If the Sopranos finale was willfully oblique, refusing to tie up the 8-year saga of Tony and his goons into a

That was especially true of its subdued yet powerful series finale, which contains two stunning sequences.

Then, there’s the emotional final montage, which followed the Jennings as they wordlessly escaped the country.

After everything, the Jennings' marriage survived, but their family didn’t.

Seinfeld | 15. SEINFELD (1989-1998) So much about this ender is great, but we’re going to single out the parade of past favorites who file into the

Joey Delvalle/AP Images(2)

A fittingly depressing (and perfect) ending to this series.

Ken Tucker

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It was therefore assumed that all six seasons ofSt.

Battlestar Galactica | 14. BATTLESTAR GALACTICA (2003-2009) Some questions were answered, while others were left up in the air, but as the survivors of the Cylon holocaust finally

Elsewheretook place in the son’s imagination.

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The Leftovers(20142017)

The Leftoversremained true to itself to the very end.

All that matters is that she’s here in the now and so is Kevin.

FRIENDS, Jennifer Aniston, David Schwimmer, Matt LeBlanc, ‘The One With All The Others/The Last One’, (Series Finale, Season 10), 1994-2004

‘Friends’ series finale.Warner Bros. / Courtesy of Everett

Thus, the entire second series was but a dream.

But that isn’t what made the finale so incredible.

Goggins then perfectly delivered the line that said everything about their relationship: “We dug coal together.”

Star Trek: The Next Generation | 13. STAR TREK: THE NEXT GENERATION (1987-1994) ‘‘All Good Things…’’ brought this über-successful extension of the Star Trek franchise to an end, and it did

Frasier | 12. FRASIER (1993-2004) It only seemed fitting that the 11 seasons that Frasier and company spent analyzing their lives and loves to death would end

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Edie Falco, Robert Iler, … | 10. THE SOPRANOS (1999-2007) Who needs resolution? Tony Soprano (James Gandolfini) lived so much of his life in the realm of ambiguity, we shouldn’t have

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The Shield | 8. THE SHIELD (2002-2008) Even with all the despicable things he’s done, you can’t deny that at least a part of you wanted Vic Mackey

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Buffy the Vampire Slayer | 9. BUFFY THE VAMPIRE SLAYER (1997-2003) Buffy (Sarah Michelle Gellar) ended seven seasons of butt-kicking joy with Sunnydale sunken into a crater, Spike (James Marsters)

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Lost

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M<em>A</em>S<em>H | 6. M</em>A<em>S</em>H (1972-1983) After 11 seasons of hilarity and heartbreak, the Korean War comedy ended with a two-and a half hour TV movie that aired

FRIDAY NIGHT LIGHTS

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Cheers | 5. CHEERS (1982-1993) Was Sam (Ted Danson) really going to ditch the bar to move to L.A. with the reemerged Diane (Shelley Long)? Of course

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The Mary Tyler Moore Show | 4. THE MARY TYLER MOORE SHOW (1970-1977) It was a weird bit of irony with The Mary Tyler Moore Show &rsquo;s notable finale: The new

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The Fugitive | 3. THE FUGITIVE (1963-1967) The finale was watched by 72 percent of American TV households — a record that still stands. The public was avid

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St. Elsewhere | 2. ST. ELSEWHERE (1982-1988) The finale showed us the autistic son of hero Dr. Westphall (Ed Flanders) playing with a snow globe, lost in thought.

The Leftovers Finale

Ben King/HBO

Newhart | MEMORABLE TV FINALE It was all a dream?! Thirty million people watched Bob Newhart wake up next to Suzanne Pleshette (who&rsquo;d played his wife, Emily,

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PARENTHOOD

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BREAKING BAD

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JUSTIFIED, (from left): Jacob Pitts, Erica Tazel, Timothy Olyphant, &lsquo;The Promise&rsquo;, (Season 6, ep. 613, aired April 14, 2015)

‘Justified’ series finale.Prashant Gupta / FX / Courtesy of Everett