Popwatch stumper

Entertainment Weekly's Popwatch has a weekly Headscratcher and I'm proud to say I got the answer to this one. What do the following actors have in common?

Morgan Freeman
Robert Redford
Kim Stanley
Spencer Tracy
Joanne Woodward

I'll give the answer on Monday, after EW posts the winners.

And here it is -- all were narrators in feature films in which they did not otherwise appear.

Freeman narrated 2005's War of the Worlds. (He also narrated March of the Penguins that same year, a movie that neither he nor anyone else acted in.) Redford narrated (and also directed) A River Runs Through It. Stanley voiced the adult Scout in To Kill a Mockingbird. Tracy narrated How the West Was Won, and Woodward gave an Edith Wharton-esque voice to The Age of Innocence.

And all were nominated for Oscars, which makes it timely. Happy Oscar nomination day!