Bart will play an employee at the hotel in Farhampton where Barney (Harris) and Robin (Cobie Smulders) will get married this season.
The series, which will return for its final season Sept. 23, also features Alyson Hannigan, Josh Radnor and Jason Segel.
Bart, who took home the Tony Award in 1999 for his performance in You're a Good Man, Charlie Brown, was Tony-nominated for his performance in The Producers and has also been seen in The Frogs, Triumph of Love, King David and Big River.
The return of Yasmina Reza's play starring James Corden, Neil Patrick Harris, and Bobby Cannavale, is at the Music Box Theatre.
Scott Rudin's Broadway producing return stars Laurie Metcalf and Micah Stock.
The Stephen Schwartz musical stars and is co-produced by Kristin Chenoweth.
Darren Criss, James Monroe Iglehart, and other Broadway stars share their holiday favorites.
Due to the expansive nature of Off-Broadway, this list is not comprehensive.
Off-Broadway's Public Theater is presenting the new take on the James Joyce work as part of the 2026 Under the Radar Festival.
The new take on the Shakespearean tragedy focuses on a British South Asian family in modern-day London.
Jon Stewart, Gracie Lawrence, and more star in the new Simon Rich compendium at the Nederlander Theatre.
The international hit jukebox musical continues at the Stephen Sondheim Theatre.
