While there are an endless amount of theories on what makes a relationship last, many agree that the ability to laugh together is key. If that's true, these couples all had a head start.

From comedy partners who have been married for over 50 years to the Daily Show's married correspondents to two of our favorite Mr. Show stars, the list of funny co-habitants goes on and on.

Check out our full list below, and don't forget to vote for your favorite couple and let us know who we missed.

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  • Judd Apatow And Leslie Mann

    Apatow and actress Leslie Mann have been married for more than 10 years and have two daughters together.

  • Andy Richter And Sarah Thyre

    Richter and actress/comedian Thyre met in Los Angeles in the early 90s and have been married since 1994.

  • Will Arnett And Amy Poehler

    Poehler and Arnett have been married since 2003 and have acted together in a number of productions, including "Parks And Recreation," "Arrested Development" and "Blades Of Glory."

  • Steve Carell And Nancy Walls

    The couple met while Carell was teaching at The Second City Training Center in Chicago. Walls, an "SNL" and "Daily Show" alum, took a class there taught by Carell.

  • Jason Jones And Samantha Bee

    "The Daily Show" correspondents have been married since 2001, and <a href="http://www.thedailyshow.com/watch/tue-march-11-2008/shame-parade" target="_hplink">their marriage often comes up on the show</a>.

  • Ellen DeGeneres and Portia de Rossi

    TV's most charming daytime talkshow host and one of the stars of just about everyone's favorite cancelled television show ever? No wonder, Ellen and Portia are one of our fav couples.

  • Rob McElhenney And Kaitlin Olson

    Olson and McElhenney, who both star in "It's Always Sunny In Philadelphia," have been married since 2008.

  • Nick Offerman And Megan Mullally

    This may blow your mind, but Offerman and Mullally (who plays Tammy II in "Parks And Rec") are actually married in real life.

  • Will Smith and Jada Pinkett Smith

    In between more dramatic and action-oriented roles, Will Smith and Jada Pinkett-Smith two have consistently made us laugh: Fresh Prince and A Different World, anyone? Plus, they make marriage look fun, which we're pretty sure it's supposed to be.

  • Ben Stiller and Christine Taylor-Stiller

    Stiller and Taylor met in 1999 while filming a never-picked-up Fox pilot called "Heat Vision and Jack", directed by Stiller and starring Jack Black. They've since worked together in Zoolander, Dodgeball & Tropic Thunder.

  • Jerry Stiller & Anne Meara

    Speaking of Stillers, Jerry Stiller and Anne Meara are the gold standard for both longevity in career and love. They two have been married since 1954.

  • David Cross and Amber Tamblyn

    The recently engaged couple have been together 4 years, but they took things slow due to their age difference Cross <a href="http://www.huffingtonpost.com/2012/05/25/david-cross-amber-tamblyn_n_1545783.html" target="_hplink">said recently</a>. Tamblyn, though more known for dramatic television roles, guested on Cross' The Increasingly Poor Decisions Of Todd Margaret.

  • Charlie Day And Mary Elizabeth Ellis

    Day and Ellis, who incidentally plays Charlie's crush "The Waitress" in "It's Always Sunny In Philadelphia," have been married since 2006.

  • Tom Hanks and Rita Wilson

    Hanks and Wilson initially met during the filming of "Bosom Buddies," and developed a relationship later when working on "Volunteers."

  • Neil Patrick Harris and David Burtka

    We challenge you to not have your face charmed off whenever these two show up. Harris and Burtka began dating in 2004 and they have twin boys. Burtka guested in five episodes of "How I Met Your Mother" prior to their relationship being made public.

  • Taran Killam and Cobie Smulders

    SNL's Taran Killam and How I Met Your Mother's Cobie Smulders announced their engagement in 2009, shortly before the birth of their first child. They plan to wed in September of 2012.

  • Jason Biggs and Jenny Mollen

    While Biggs' reputation as a comedic actor is pretty well set in stone thanks to the American Pie series, comedy may not be the first thing you think of when Jenny Mollen comes to mind. However, we would strongly encourage you to check out her <a href="https://twitter.com/#!/jennyandteets" target="_hplink">Twitter</a> feed... you'll thank us. The couple have been married since 2008.

  • Anna Faris and Chris Pratt

    Parks and Recreation's Chris Pratt and comedic actress extraordinaire Anna Faris met on the set of Take Me Home Tonight. They married in 2009 and recently announced that they're expecting their first child.

  • Tom Kenny and Jill Talley

    Tom Kenny and Jill Talley aren't just one of our favorite comedy couples, they're two of our favorite comedic actors/voice artists period. The former Mr. Show regulars married in 1993 and have two children.

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