YouTube released its list of most watched videos for 2010, with the "Bed Intruder Song" topping the list of all videos worldwide, and Justin Bieber's "Baby" (feat. Ludacris) taking the top music video honors.

"Baby" also became the most-viewed video of all time with more than 400 million views. Lada Gaga, however, is the most-viewed artist, with more than 1 billion cumulative views of all her content.

The top 10 most-watched videos of all kinds were:

BED INTRUDER SONG!!! (now on iTunes)
TIK TOK KESHA Parody - Key of Awe$ome #13
Greyson Chance Singing Paparazzi
Annoying Orange Wazzup
Old Spice | The Man Your Man Could Smell Like
Yosemitebear Mountain Giant Double Rainbow 1-8-10
OK Go - This Too Shall Pass - Rube Goldberg Machine version
THE TWILIGHT SAGA: ECLIPSE - Trailer
Jimmy Surprises Bieber Fan
Ken Block's Gymkhana THREE, Part 2; Ultimate Playground; l'Autodrome

The top 10 most-watched music videos were:

Justin Bieber - Baby ft. Ludacris
Shakira ft. Freshlyground - Waka Waka (This Time for Africa) (The Official 2010 FIFA World Cup Song)
Eminem - Love The Way You Lie ft. Rihanna
Eminem - Not Afraid
Rihanna - Rude Boy
Justin Bieber - Never Say Never ft. Jaden Smith
Justin Bieber - Never Let You Go
Lady Gaga - Alejandro
Justin Bieber - Somebody To Love Remix ft. Usher
Lady Gaga - Telephone ft. Beyonce

YouTube also broke down the most searched-for terms by month on the site:

January: Haiti
February: Luge
March: Eclipse trailer
April: iPad
May: Eminem Not Afraid
June: Shakira Waka Waka
July: Double Rainbow
August: Bed Intruder
September: halo reach
October: Whip My Hair
November: firework