Fast Track: Katy Perry mermaid ‘plank’ piques Lady Gaga fans

A roundup of entertainment headlines for Tuesday:

Lady Gaga fans make a splash about Katy Perry’s mermaid “planking” photo, which comes after Gaga had announced plans of a mermaid video of her own. (MTV)

Justin Bieber wants you to drive safely. The pop star campaigns for an app that disables texting while driving. (Hollywood Reporter)

Ryan Seacrest assembles a roster of superstars, including Lady Gaga, Usher and Coldplay, for an online streaming music festival. (Los Angeles Times)

Beyonce fires her dad as her manager amid accusations he was stealing from her, according to legal papers. He denies the allegations. (TMZ)

Jewel and her cowboy hubby welcome a baby boy. (Access Hollywood)

Arnold Schwarzenegger aims for a big-screen comeback with “The Last Stand.” (Los Angeles Times)

Will Forte joins Tom Cruise and Alec Baldwin in “Rock of Ages.” (Hollywood Reporter)

A Marine in Afghanistan invites “Black Swan” actress Mila Kunis to the Marine Corps Ball via YouTube video -- and she says yes. (Los Angeles Times)

“The Bachelorette” bumps Ryan off “cloud ten.” (Los Angeles Times)

Jake Gyllenhaal teams up with Bear Grylls for “Men vs. Wild” in Iceland. (Los Angeles Times)

It’s catch-up time for the latecomers. AMC is re-airing “Mad Men” from the beginning. (AMC)

The comedic team behind “Robot Chicken” is launching a YouTube series called “Stoopid Monkey.” (Deadline)

“A Dance with Dragons,” the newest installment in the series that inspired the HBO show “Game of Thrones,” is out today. (Los Angeles Times)

Ten years in pictures of Rupert Grint as Ron Weasley in the “Harry Potter” movies. (Los Angeles Times)

In the wake of the phone-hacking scandal, News Corp. approves a $5-billion stock buyback. (Los Angeles Times)

The Nook Color usurps Kindle’s spot as the most popular e-reader. (Dvice)

-- Noelene Clark

Google Trends

1. a dance with dragons

2. the dark knight rises

3. orientation

4. gonorrhea

5. kremlin

6. red square

7. all star game

8. mila kunis

9.cystic fibrosis

10. russia