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As YouTube celebrates its 10th birthday next month (YouTube says its official anniversary is in May), let's take a moment to give thanks for all the adorable babies, hilarious animals and pop superstars we never would have known about if it wasn't for their unforgettable, viral hits.
To mark the big occasion, here are 10 clips we're still talking about — and sharing.
Psy, "Gangnam Style" (2.3 billion views)
South Korean musician Psy had everyone — including TODAY's anchors — imitating his signature horse dance when he released this infectious hit in 2012. Just hearing the name gets it stuck in our heads.
Justin Bieber, "Baby" (1.2 billion views)
We had childhood photo albums, Justin Bieber has YouTube. The fresh-faced singer was already a star on the site in 2010 when he released "Baby," the lead single from his debut studio album, "My World 2.0," in which he croons about first love in a bowling alley.
"Charlie bit my finger" (816 million views)
An adorable baby boy chomps down on his older brother's finger in this eight-year-old clip. Click here to see what the boys look like now.
LMFAO, "Party Rock Anthem" (856 million views)
It's hard to sit still when this upbeat dance track comes on — and it comes with the added bonus of lyrics that are so simple, you feel like you already know them. (Sample: "Get up, get down, put your hands up to the sound.")
"Evolution of Dance" (290 million views)
Comedian Jad Laipply manages to fit six decades of dance crazes into this clever six-minute clip.
"Sneezing panda" (216 million views)
A panda is munching on a snack when he has a sudden — and hilariously loud — sneeze attack.
"Mutant giant spider dog" (137 million views)
The name pretty much says it all.
"David after dentist" (128 million views)
A 7-year-old's confused reaction to anaesthesia after having an extra tooth removed leaves him questioning everything. "Is this real life?" he asks at one point. We're betting he never let his family film anything ever again.
"Harlem Shake" (army edition) (107 million views)
The Norwegian military really broke it down with their interpretation of the popular dance craze in 2013.
The Force: Volkswagen Commercial (62 million views)
This clever spot, which saw a young "Star Wars" fan attempt to use the Force to perform various tasks — became the most shared Super Bowl ad of all time.