The history of film and television is rich with classic but unlikely pairings. Two characters who might at first seem like chalk and cheese can turn out to be more like bacon and maple syrup - they might sound strange together but they turn out to be oh so right.
Netflix recently launched its latest original show Grace and Frankie, and in celebration of its unlikely pairing, here are some of our favourite on-screen odd couples, all waiting to be watched on Netflix right now (Warning: contains spoilers):
Grace and Frankie (Grace and Frankie)
The new show reunites 9 to 5 stars Jane Fonda and Lily Tomlin as two women all geared up for their respective retirements - until they discover that their husbands are not only law partners but lovers to boot.
Uptight Grace and free-thinking Frankie have never seen eye-to-eye, but after the shocking revelation that their exes are planning to get married, they find that they have more in common than they thought. But is that enough to unite them when they wind up living together?
Walt and Jesse (Breaking Bad)
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Former chemistry teacher and would-be drug lord Walter White seems a poor match for his drop-out former student and sometime meth head Jesse Pinkman.
And to be honest, they frequently are. But at the same time, they prove to be very successful collaborators in their illegal dealings, and Walt has a father-like affection for Jesse, even if the younger man fails to see it.
Piper and Alex (Orange Is the New Black)
It's pretty clear that her friends, family and loved ones are shocked when straight-laced Piper Chapman is thrown into a federal prison for her secret past with drug smuggling bad girl Alex Vause.
Alex isn't a wholly good influence, that's for sure, but their on-again-off-again relationship certainly brings out a tougher and more open-minded Piper that probably makes her a better person when all is said and done.
Kirk and Spock (Star Trek Into Darkness)
The ultimate sci-fi odd couple, Captain James T Kirk represents brash emotionalism and gut instincts while his long-suffering second-in-command Spock is a paragon of Vulcan logic.
Despite their differences, they have proven time and time again to be unbeatable explorers of the final frontier, stronger together than apart and with a deep (but often hidden) understanding.
Felix and Oscar (The Odd Couple)
Classic comedy duo Jack Lemmon and Walter Matthau team up for this comedy classic about two divorced men - neurotic clean-freak Felix Ungar and easy-going but slobby Oscar Madison - who shack up together despite their huge differences.
The movie set the precedent for many films and shows that have followed, including its own much-loved TV spinoff.
Mike and Harvey (Suits)
Harvey Specter is a high-flying lawyer who has fought every step of the way to find himself in the upper echelons of a top New York City law firm.
So Mike Ross, a talented but under-qualified young man who never attended law school, would in theory be the last person Harvey would want to throw his hat in the ring with. But against all the odds, and a few close scrapes, they've proven to be an unbeatable legal duo.
Kimmy and Titus (The Unbreakable Kimmy Schmidt)
Kimmy arrives in New York City fresh from her 15-year-long imprisonment underground by a doomsday cult. Disillusioned would-be Broadway star Titus becomes the street-smart mentor for the young woman, who is full of enthusiasm but short on understanding of the modern world.
But this relationship is far from one-sided, and Titus has plenty to learn from Kimmy too.
Schmidt and Jenko (22 Jump Street)
The boys are back in the comedy sequel about two bungling cops who are sent undercover at their local college to bust a drug ring.
Geeky Morton Schmidt and underachieving jock Greg Jenko are in many ways polar opposites in the popularity pecking order, but form an unbeatable duo despite their differences. The pair are given another opportunity to make up for their misspent youths while getting into many an hilarious scrape along the way.
Harold and Maude (Harold and Maude)
Bridging the generation gap, this black comedy pairs a young man obsessed with death with a 79-year-old woman gearing up to face her own demise.
This portrayal of a cross-generational romance is pretty progressive by today's standards, let alone back in 1971 when it was released. And Harold and Maude are probably the cutest couple on our list.
Watch the trailer for Grace and Frankie below:
