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Which viral video did you share with all your Facebook friends?
Sophia Grace & Rosie
They sing Nicky Minaj better than Nicky Minaj – in tiaras and tutus, no less!
The Honey Badger
"Get away from me, says the snake. Honey Badger don't care!"
Marcel the Shell
He's a shell. He wears shoes. He's the cutest thing in the world. Any questions?
Maria Aragon (Lady Gaga girl)
This ten-year-old girl took YouTube by storm with her "Born This Way" cover; one month later, she was singing it onstage with Lady Gaga!
Jorge Narvaez & daughter Alexa
This heartwarming father-daughter duet had us all whistling along.
Clearly, talent runs in these families. Which up-and-coming little sister turned the most heads this year?
Elle Fanning
Her style is less showy than sister Dakota's, but there's no overlooking the Super 8 star's talent.
Kendall & Kylie Jenner
The Kardashian sisters got the fame train rolling, but their teen step-siblings have jumped right on.
Elizabeth Olsen
The Olsen twins have been famous since they were toddlers, but they never floored film critics like their little sis.
Rooney Mara
Sister Kate Mara got an earlier start in showbiz, but Rooney's 'Dragon Tattoo' made her an instant "It girl."
Pippa Middleton
She's got ten times as many Facebook fans as her royal sister – and that's not counting the pages dedicated to her butt alone!
Taissa Farmiga from American Horror Story
Sister Vera persuaded her to go into acting two years ago; now, she's making fans gasp weekly on 'American Horror Story.'
You just couldn't help yourself. Which of these pop-culture talking points did you fall for?
Charlie Sheen’s catchphrases
Sometimes there's just nothing to say except "winning."
Rebecca Black’s videos
Partyin' partyin' yeah! Partyin' partyin' yeah! Fun fun fun fun…
Anderson Cooper’s high-pitched giggle
Enough with the world news. More giggling at potty jokes!
Justin Bieber’s movie 'Never Say Never'
How cute are those home videos of baby Justin and his little drum set?
Nicki Minaj’s crazy style
She kind of dresses like you used to dress your Barbie dolls -- and you just can't get enough.
One night a week just doesn't seem like enough. Which fictional family would you gladly share a beach house with?
The Dunphys & Pritchetts from 'Modern Family'
Because everything they do becomes a competition – in the most fun way possible. Pumpkin chucking, anyone?
The Brinkleys from 'Up All Night'
Because no one knows how to kick back like a frazzled working mom and an exhausted stay-at-home dad.
The Bravermans from 'Parenthood'
Because even when this big family is at its most dysfunctional, their love for each other always comes first.
The Chances from 'Raising Hope'
Because they may not be smart, but they're endlessly entertaining.
The Griffins from 'Family Guy'
Because you've secretly always wanted to share a daiquiri with a talking dog.
The Harpers from 'Two and a Half Men'
Because you could spend the vacation dishing with Berta. Besides, Alan could use a good woman to help him unwind.
You once watched them on MTV, now you watch them on YouTube at work. Which music video had you dancing at your desk?
Rihanna: "We Found Love"
The year's most cinematic music video followed a turbulent love affair from beginning to end. Was it based on her real-life relationship with Chris Brown?
Lady Gaga: "You and I"
She's a cyborg! She's a mermaid! She's a man! Even for Lady Gaga, this video was full of surprises.
Beyonce: "Countdown"
No baby bump has ever looked more stylish than Beyonce's in this '60s-inspired video.
Katy Perry: "Last Friday Night"
The cameos alone (Rebecca Black! Corey Feldman!) merit repeat viewings of Perry's party anthem.
Bruno Mars: "The Lazy Song"
It's one continuous shot, and it stars dancing monkeys. What's not to like?
LMFAO: "Sexy and I Know It"
There's just something about Redfoo's leopard-print speedo that makes it impossible to look away.