Here's what you can expect on this week's countdown, for the week ending June 26, 2010:
- Katy Perry has been one of the most successful artists on the countdown, hitting the top spot with 3 of her previous 4 videos to chart on the countdown. And this week, she returns to the countdown with the song of the summer, "California Gurls" featuring Snoop Dogg.
- Speaking of debuts, 4 other videos make their first appearance on the countdown, including the newest single from B.o.B which features Paramore lead singer Hayley Williams. Also debuting this week are other artists familiar with the countdown, such as Adam Lambert, Gorillaz and John Mayer with help from Taylor Swift.
- And after taking over #1 last week, Usher takes a dive this week. Who was able to take over #1? Was Ke$ha able to take back to top spot for a 3rd time, or will Travie McCoy & Bruno Mars get their first week at #1 with "Billionaire".
The answers to all your questions, plus the return of Bon Jovi, is all coming up on the countdown!
 | 23. Lupe Fiasco
"I'm Beamin'" |
 | 22. Rooney
"I Can't Get Enough" |
 | 21. 3OH!3 featuring Ke$ha
"My First Kiss" |
1. Ke$ha "Tik Tok" (5x)
2. Owl City "Fireflies"
3. Shinedown "If You Only Knew"
4. Lifehouse "Halfway Gone"
5. Train "Hey, Soul Sister" (2x)
6. Daughtry "Life After You"
7. Kris Allen "Live Like We're Dying"
8. Lady Antebellum "Need You Now" (3x)
9. Lady Gaga featuring Beyoncé "Telephone"
10. B.o.B featuring Bruno Mars "Nothin' On You" (3x)
11. The Script "Breakeven"
12. Jay-Z featuring Mr. Hudson "Young Forever"
13. Ke$ha "Your Love Is My Drug" (2x)
14. Usher featuring will.i.am "OMG"
15. B.o.B featuring Hayley Williams of Paramore "Airplanes"
CURRENT #1
Voted. 
