In 2006, Peter and his co-stars were nominated the Actor award for Outstanding Performance by a Cast in a Motion Picture for Good Night, and Good Luck (2005).
In 2004, Peter did commercials for Nextel and Diet Pepsi Twist. He also did a commercial for Planters Peanuts.
His father, Walter Jacobson, is a veteran Chicago news anchor.
He graduated from Brown University in 1987.
In 1991 he graduated (Julliard).