Canadian teen heartthrob Justin Bieber has cancelled one of two scheduled concerts in Portugal next week, just after completing what he admitted had been a rough week in London, promoters said Saturday.

Within a few days, the 19-year-old pop sensation angered some of his fans for being late on stage, then suffered a health scare and was involved in a foul-mouthed confrontation with a photographer.

Hollywood star Sean Penn, civil rights leader Jesse Jackson and a pair of U.S. politicians joined mourners at Venezuelan leader Hugo Chavez's funeral Friday, with the reverend praying for better U.S.-Venezuelan relations.

A somber-looking Penn, wearing a black suit and tie, sat among the crowd of foreign dignitaries who paid tribute to the leftist firebrand leader, who bonded with several American movie stars during his 14-year presidency.

Rubber-faced comic Jim Carrey returned to the big screen in fan-pleasing form Friday by way of the opening feature of the South by Southwest (SXSW) film festival.

"The Incredible Burt Wonderstone" stars Steve Carrell as a washed-out Las Vegas magician in ghastly sequined suits whose refusal to change with the times nearly costs him his life-long friendship with stage partner Anton Marvelton, played by Steve Buscemi.

Kelly Osbourne says she had a seizure and doctors are trying to figure out why.

The 28-year-old TV personality posted a photo on Twitter late Thursday of an IV in her tattooed left arm. She thanked her fans for their "beautiful well wishes."

Canadian pop star Justin Bieber returned to the stage Friday after a torrid 24 hours in which he suffered a health scare then lashed out at a photographer.

The 19-year-old said he had had a "rough week" and was "human" following the foul-mouthed confrontation with a paparazzi cameraman in London.

Leonardo DiCaprio says filming violent scenes like in "Django Unchained" doesn't deter him from wanting his movies to be great art.

The bloody revenge film about slavery before the U.S. Civil War has fueled some of the debate about whether Hollywood shows too much on-screen violence. DiCaprio portrays a ruthless plantation owner encountered by a freed slave and bounty hunter (Jamie Foxx and Christoph Waltz).

Justin Bieber is recovering after fainting backstage at a concert in London.

A spokeswoman for Bieber said late Thursday that the 19-year-old pop star was given oxygen and took a 20-minute reprieve after fainting backstage at London's O2 Arena.

South Korean rapper Psy said Friday he would release the highly-anticipated follow up to his global hit "Gangnam Style" in April, and hold a large concert in Seoul to mark the occasion.

Psy, sporting his signature sunglasses, announced the planned release in Korean and English in a video uploaded to YouTube which featured subtitles in six languages including Chinese, Thai, Spanish, French and Portuguese.

Huge engine power and speed records remain the name of the game for the many luxury vehicles on prominent display at the International Geneva Motor Show this week.

"In super-luxury, there is still a tendency to try to reach new speed records," explained German car specialist Stefan Bratzel.

A leading Bolshoi dancer who has made a specialty of playing villains admitted in court on Thursday that he ordered an assault on the famed Russian ballet troupe's artistic director but denied ever planning the use of acid.

Appearing before a Moscow district court, leading Bolshoi soloist Pavel Dmitrichenko claimed he did not tell the man who carried out the attack to fling acid into the face of Sergei Filin, who is now battling to save his eyesight.