Here is the list of most watched videos on Youtube in the year of 2009. Evian Roller Babies is one of my all time favorites.

Most Watched YouTube videos (Global):
1. Susan Boyle – Britain’s Got Talent (120+ million views)
2. David After Dentist (37+ million views)
3. JK Wedding Entrance Dance (33+ million views)
4. New Moon Movie Trailer (31+ million views)
5. Evian Roller Babies (27+ million views)

Most Watched music videos on YouTube (Global)*:
1. Pitbull "I Know You Want Me" (82+ million views)
2. Miley Cyrus "The Climb" (64+ million views)
3. Miley Cyrus "Party in the U.S.A." (54+ million views)
4. The Lonely Island "I’m On a Boat" (48+ million views)
5. Keri Hilson "Knock You Down" (35+ million views)

Source: Broadcasting Ourselves! – Youtube Blog

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