Susan Boyle's album became the best-selling debut in UK chart history
Britain's Got Talent runner-up Susan Boyle was the star of the most popular video of 2009 on video site YouTube.
The Scottish singer's surprising rendition of I Dreamed A Dream on the show has been watched by more than 120 million viewers worldwide.
The moment had more views than the next three most-watched videos combined.
In second place, with more than 37 million views, was a video featuring a disorientated seven-year-old boy recovering from dental work.
David After Dentist was posted by the child's father after his son had surgery to remove a tooth in 2008.
Within a week the video had amassed more than five million views and had become a viral hit.
The video shows the child in the back of the car telling his father that he "feels funny".
"Is this real life?" he asks.
The video has a huge following with fans producing t-shirts and stickers featuring the child star. David's Father, David Davore, has also been asked to speak at events.
Third place went to JK Wedding Entrance Dance, which showed an convoluted dance routine featuring members of their entourage just before their wedding.
It attracted 33 million views and attention from Sony, which owned the rights to the Chris Brown song that provided the soundtrack to the video.
The firm placed a link next to the video allowing people to buy the song and also shared profits from sales of advertisements on the site.
In the UK, the most popular video was a commercial for Evian water featuring roller skating babies.
Other popular videos in the UK include an advert for Samsung and showing a farmer creating artwork on a Welsh hillside by using his dogs to round-up sheep, wearing LED-covered vests, into specific patterns.
YouTube, which is owned by Google, serves up around a billion videos every week.
It makes money through selling advertising around the videos, most of which are uploaded by users.
However, the site now also offers short videos form intentional broadcasters as well as full-length TV programmes from the UK's Channel 4 and Channel 5.
The firm has also reportedly been in talks with movie studios to licence content and has discussed the possibility of starting a subscription or movie rental service.
It is the first time YouTube has released a list of its most popular videos.