Emmy winner Conroy — best known for her work on HBO's "Six Feet Under" — will appear on the sitcom's 15th episode of the season, which is titled "The Stinsons."
In the episode, TVGuide.com reports, "the gang discovers that Barney [Neil Patrick Harris] has a fake wife-and-kid on call should his mother ever come to town." Brooke D'Orsay will also guest on the episode.
Frances Conroy was nominated for a Tony Award for her performance in The Ride Down Mt. Morgan. Her other Broadway credits include The Lady from Dubuque, Our Town, The Secret Rapture, Some Americans Abroad, Two Shakespearean Actors, In the Summer House, Broken Glass, The Rehearsal, The Little Foxes and Ring Round the Moon.
"How I Met Your Mother" stars Josh Radnor as Ted, Neil Patrick Harris as Barney, Jason Segel as Marshall, Cobie Smulders as Robin and Alyson Hannigan as Lily. The sitcom airs Mondays on CBS at 8:30 PM ET.
"How I Met Your Mother," according to CBS, is "a comedy about Ted (Josh Radnor) and how he fell in love. It all started when Ted's best friend, Marshall (Jason Segel), dropped the bombshell that he was going to propose to his longtime girlfriend, Lily (Alyson Hannigan), a kindergarten teacher. At that moment, Ted realized that he had better get a move on if he, too, hopes to find true love. Helping him in his quest is his friend Barney (Neil Patrick Harris), a confirmed bachelor with endless, sometimes outrageous opinions, a penchant for suits and a foolproof way to meet women. When Ted meets Robin (Cobie Smulders), he's sure it's love at first sight, but destiny has something else in store. The series is narrated through flashbacks from the future." For more information visit www.cbs.com.