YouTube's most-watched videos of the week: Bieber fever and "California Gurls"

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Music's superstars including Justin Bieber, Katy Perry, and Eminem (did the latter ever dream of being mentioned in a lineup like this one?) are still most popular on YouTube.

1) Justin Bieber - Somebody To Love (Remix) ft. Usher - The Bieber fever is still mounting. 9,045,787 views.

http://www.youtube.com/watch?v=SOI4OF7iIr4

2) Katy Perry ft. Snoop Dogg "California Gurls" Official Music Video HD - Katy Perry's videos are rivaling Lady Gaga's when it comes to outfit changes and general wackiness. This time, she seems to have sipped on some strange gin 'n' juice with rapper Snoop Dogg. 5,371,455 views.

http://www.youtube.com/watch?v=CwE-SLnLkqY

3) Eminem Feat. Rihanna - Love The Way You Lie - Eminem mania is still going strong after all these years, and in this case, he doesn't even need a music video to go with his song in order to enter the top ten. 4,128,710 views.

http://www.youtube.com/watch?v=0nfore7F0h4

4) Message of hope from Nick Vujicic - This video about the fate of Vujicic, who is an athlete who was born limbless, is making YouTubers muse about sport's true benefits.

http://www.youtube.com/watch?v=0DcqPzO26os

5) MY BABY DADDY!! - Vlogger Ray William Johnson tells you all about the dangers of ziplines, self-reflection, and unprotected intercourse. 2,745,554 views.

http://www.youtube.com/watch?v=irhWs_Yb6Dg

6) Congressman Assaults Student on Washington Sidewalk - Politicians the world over take note: YouTube can ruin your political career. 2,735,872 views.

http://www.youtube.com/watch?v=v60oNUoHBYM

7) Nigerian player kung fu kicks Greece player Kaita sent off - This is what happens when diplomacy has failed. 2,310,343 views.

http://www.youtube.com/watch?v=dgj1l9vUyhU

8) NO PANTS!! - Vlogger Ray William Johnson has even more unexpected everyday perils for you. 2,255,466 views.

http://www.youtube.com/watch?v=cOtd5xJW6Qk

9) MY JUSTIN BIEBER GUITAR *FAIL* : ASK SHANE # 1 - Vlogger Shane Dawson's intimate question session video from last week isn't going anywhere. 1,943,862 views.

http://www.youtube.com/watch?v=O8TdeWDonqg

10) Key of Awesome: Katy Perry California Gurls Parody! Key of Awesome #22 - Online video website Barely Political tells all about the hidden meaning of Katy Perry's video. Check out the lyrics! 1,567,243 views.

http://www.youtube.com/watch?v=c_stcgW8E4o

Data collected on YouTube.com on Friday, June 25, 2010