Pierce will have a recurring role as a "highly respected cable news legal commentator who is so disgusted by the corruption and murder rate in Chicago that he decides to run for office in order to affect change," according to press notes.

"We couldn’t be more thrilled and flattered that David’s making 'The Good Wife' his first TV role since ‘Frasier,’” said executive producers/showrunners Robert and Michelle King in a statement. “We’re tremendous fans of his dramatic skills as well as his comedy.”

Pierce is slated to make his Broadway directorial debut this spring with Brian Hargrove and Barbara Anselmi’s new musical, It Shoulda Been You.

"The Good Wife" returns for its sixth season Sept. 21 at 9:30 PM ET on the CBS Television Network.

The drama stars Julianna Margulies, Christine Baranski, Matt Czuchry, Archie Panjabi, Makenzie Vega, Alan Cumming, Matthew Goode and Zach Grenier.

It is produced by Scott Free Productions and King Size Productions in association with CBS Television Studios. Ridley Scott, Robert King, Michelle King, Brooke Kennedy, David W. Zucker, Ted Humphrey, Keith Eisner, Leonard Dick and Craig Turk are executive producers.