Skarsgard, who's worked with Von Trier many times before, joked that his experience on the film was made better by being "locked up with Charlotte Gainsbourg for two weeks."
"Life can be worse than that," he said.
LaBeouf apparently continued his bizarre antics following the press conference.
After leaving the news conference he appeared to pose for photos on the red carpeet wearing a paper bag over his head.
The actor, who was otherwise smartly dressed in a tux, wore a brown bag with the words 'I am not famous' anymore written across it, with eye holes cut out.
