Zach Grenier is an American character actor who has appeared on dozens of major TV shows, but may be best known as the stone-faced boss in the subversive cult classic "Fight Club" (1999). Featured in stage productions in his youth, Grenier had his earliest screen parts on episodes of various late-1980s television shows. After small roles in the 1988 features "Working Girl" and "Talk Radio," he shifted towards film appearances, eventually turning up in the tornado movie "Twister" (1996) and the crime drama "Donnie Brasco" (1997). Following his memorable performance as a callous corporate guy in "Fight Club," Grenier leaned back in the direction of TV, with a recurring role on the action series "24" (Fox, 2001-2010) and a slew of one-off spots on other major network shows. In 2004, he began a stint on the rugged HBO period drama "Deadwood" (2004-06), and later joined the cast of the fan-favorite series "The Good Wife" (CBS, 2009- ). Although Grenier has continued to make occasional movie appearances, he seems to have hit his stride on television, where his subtle yet steely presence is more thoroughly showcased.