Celebrities took to social media to remember Anton Yelchin, who was best known for playing Chekov in the new "Star Trek" films. The actor was killed by his own car as it rolled down his driveway, police and his publicist said.

Director J.J. Abrams, who cast Yelchin in the franchise, wrote in a statement that he was "brilliant ... kind ... funny as hell, and supremely talented."