David at the Dentist, JK Wedding Dance

For the first time in YouTube history, the popular video site is sharing its most-watched global list of 2009. From roller-skating babies to a little boy hopped up on Novocain, check out the videos that entertained the masses this year.

5. Evian Roller Babies
Views: 27 million
These badass babies really know how to break it down — B-boy-style.
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4. New Moon Trailer
Views: 31 million
We blame teenage hormones for this one.
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3. JK Wedding Entrance Dance
Views: 33 million
This smooth-moving wedding party got so much buzz it inspired an homage at Jim and Pam's wedding on The Office.
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2. David After Dentist
Views:
37 million
Drugged-up little David became so popular, he even got his own line of merchandise available at davidafterdentist.com.
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1. Susan Boyle on Britain's Got Talent
Views: 120 million
This singing sensation rose to fame after her performance of "I Dreamed a Dream" on Britain's Got Talent went viral on YouTube. Now she's setting records with the sales of her debut album and the ratings of her one-hour special, I Dreamed a Dream: The Susan Boyle Story
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Sonja | MySpace Video

Bonus! Strange Boy Sings
This kid is awe-some. That is all.
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What was your favorite viral video of the year?