Stacy Keach and Michael Rapaport Visit CBS Sitcoms

In addition to Neil Patrick Harris‘ directorial debut with the new January 18 episode of How I Met Your Mother, CBS’ remaining three Monday-night sitcoms will present new episodes, too.

And featured on Accidentally on Purpose and Two and a Half Men are guest stars Michael Rapaport (My Name is Earl) and Stacy Keach (Titus), respectively.

Continue reading for details and preview clips.

Accidentally on Purpose | 8:30pm

The Rock: Rapaport, who just happens to be the brother of the comedy’s executive producer Claudia Lonow, reprises his role as sports writer Sully. When Billie collaborates with Sully on an article, she learns some interesting news about their newspaper. Also, Zack and Davis decide to start a business that focuses on sandwiches. The promo for “The Rock” follows.

Two and a Half Men | 9pm

Yay, No Polyps!: Prison Break alum Keach drops by TV’s most popular sitcom to play Chelsea’s father Tom. Although Charlie avoids visiting him and Chelsea’s bigoted mother Martha (Meagen Fay of Malcolm in the Middle) by scheduling a colonoscopy instead, he gets a not-so-nice surprise when he returns home to find them inside. The promo for “Yay, No Polyps!” follows.

The Big Bang Theory | 9:30pm

The Bozeman Reaction: Poor Leonard and Sheldon! After the roommates’ apartment becomes the scene of a robbery, they enlist their buddies to help create a high-tech security system. The promo for “The Bozeman Reaction” follows.