Credit: Fergus McDonald/Getty Images

Actor Pete Postlethwaite lost his battle with cancer Sunday. He was 64.

The Oscar-nominated Brit, once described by Steven Spielberg as "the best actor in the world," is perhaps best-known for his role in the 1993 film In the Name of the Father, as well as 2010's Inception and 1997's The Lost World: Jurassic Park.

Postlethwaite lived in the hills of rural Shropshire in western England. In addition to his film work, he was also a political activist who strongly opposed the war in Iraq.

Prior to his passing, the actor publicly thanked the Royal Shrewsbury Hospital staff for their "wonderful" treatment during his illness.

The movie star is survived by his wife, Jacqui, his son, Will, and his daughter, Lily.