The Shia Threshold is a point that an actor crosses to achieve a performance that is otherwise deemed a ludicrous point to cross by his or her fellow actors. Otherwise known as extreme method acting.
Origin: Shia LaBeouf went to extremes when preparing for his role as Bible in Fury. He is rumored to have pulled a tooth, not showered for the duration of the filming and cut himself on the face because real cuts look better than prosthetic scars.
Usage: "Tom Hanks is brilliant, but has he ever crossed the Shia threshold for any of his roles?"
First Used: O Brother, Where Art Thou?