For the first time YouTube is sharing their official Most Watched lists and some of the fastest-rising search terms on YouTube. Some moments were big (President Obama's inauguration), some small (a Minnesota wedding party erupts into dance), some expected ("New Moon"), some surprising (Susan Boyle) — but all of them inspired, entertained and connected millions of people around the world via YouTube.

For these lists, Youtube looked at view counts of YouTube's most popular videos this year (in some instances YouTube aggregated views across multiple versions of the same video):

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)

Then, to determine the fastest rising search terms for each month, Youtube examined the billions of queries that people searched for on YouTube (through December 15):

Fastest Rising YouTube search terms by month (Global):

January: inauguration
February: christian bale
March: the climb
April: susan boyle
May: pacquiao vs hatton
June: michael jackson thriller
July: michael jackson
August: usain bolt
September: kanye west
October: paranormal activity
November: bad romance
December: tiger woods

Fastest Rising YouTube search terms by month (U.S.):

January: obama inauguration
February: on a boat
March: watchmen
April: susan boyle
May: pacquiao
June: michael jackson thriller
July: wedding
August: send it on
September: kanye west
October: paranormal activity
November: adam lambert
December: tiger woods.