Hollywood Headlines: A week in review

The U.S. president sat down with Zack Galifianakis for an interview on the actor’s comedy Web series, “Between Two Ferns,” to plug the Affordable Care Act — matching Galifianakis joke for joke. (Galifianakis: “”I have to know — what is it like to be the last black president?” Obama: “What’s it like for this to be the last time you ever talk to a president?”) Scripted or not, Obama’s attempt at grabbing the attention of a younger demographic worked. See the whole exchange here.  (Pablo Martinez Monsivais / Associated Press)

Singer Chris Brown was arrested Friday afternoon by L.A. County sheriff’s deputies on a warrant related to his 2009 conviction for assaulting then-girlfriend Rihanna. The 25-year-old singer remains on probation for the attack and has been in court-ordered rehab for several months.  (Nick Ut / Associated Press)

The actor has been charged with a DUI following his arrest at a New Zealand sobriety checkpoint earlier this month. Pine was reportedly out drinking with the cast and crew to celebrate the end of filming “Z for Zachariah.”   (Gareth Cattermole / Getty Images)

Add Rogen to the list of stars who have spoken out against the pop star after his slew of bad behavior. “In my opinion, Justin Bieber is a piece of ...,” he said on Andy Cohen’s “Watch What Happens Live.” “He’s obnoxious and ungrateful and insincere and he puts people’s lives in danger.”  (Michael Reynolds / EPA)

“I’m always relieved on the days I don’t have to [act]. I’d rather give parts to other women than be the woman having the parts,” Dunham said in a Glamour interview. Fans, don’t despair — for the “Girls” creator, time away from the screen may mean more time writing strong female parts. “Our male lead, Adam Driver, has had a bang-up year in movies which could not be more deserved,” she later said at a SXSW event. But the girls are still waiting patiently for parts that are going to honor their intelligence and their ability.”  (Jack Plunkett / Associated Press)

According to Billboard magazine, Taylor Swift is the top money-making musician in the U.S. for 2013. The country darling turned pop princess raked in $39.7 million from music sales, artists’ publishing and streaming royalties and concert ticket revenue.   (Andreas Rentz / Getty Images)

Amanda Bynes continues to distance herself from her bizarre behavior last summer, deleting years’ worth of tweets and revamping her bio and profile picture. The actress, now an aspiring fashion designer, has been staying with her parents since finishing treatment for mental health issues that were diagnosed after she set a small fire in a neighborhood driveway.  (Chris Pizzello / Associated Press)

The musician and fashionista is collaborating with Comme des Garcons on a unisex scent called Girl, named after his latest album. “Pharrell knew exactly what he wanted the perfume to smell like right from the beginning. It has been an honor to work with such a creative artist with a great vision,” said Adrian Joffe, chief executive of Comme des Garcons Parfum SA. No word yet on what aromas will be titillating our noses come September.  (Dan Peled / EPA)

April marks the 2004 comedy’s 10th anniversary, and rumors of an onscreen reunion have been swirling since “Mean Girls” costars Tina Fey and Lindsay Lohan appeared on Jimmy Fallon’s “Tonight Show” together. But Fey says fans should not get their hopes up: “No, it’s definitely not a movie. It’s just the anniversary is coming up, so everybody get your pink shirts. It’s been 10 years. You can tell when you look at me. It’s been 10 years,” she quipped.  (Kevin Winter/ Getty Images)