Jenna and the little man

Jenna Elfman knows comedy. She starred in “Dharma & Greg” from 1997-2002 and won a Golden Globe Award and was nominated twice for an Emmy.

Now, Elfman, 38 – who is pregnant with her second child – plays a movie critic who has a one-night stand with a guy in his 20s on CBS’ “Accidentally on Purpose” (Mondays, 8:30 p.m.). She ends up pregnant and they decide to raise the baby together.

Q: Will future episodes focus more on the age difference between Zack and Billie?

A: It’s always going to present difficulties and their whole point of reference is different. … It’s someone who has a lot of life experience and someone with minimal life experience trying to raise a kid and find out who they are together.

Q: Is playing pregnant while you’re pregnant easier?

A: The whole universe of being pregnant is a very specific, particular sensation for a woman so being pregnant while playing pregnant is really cool.

Q: You’ve been married a long time (she wed actor Bodhi Elfman in 1995). That’s rare in Hollywood.

A: I’ll say!

Q: What’s your secret?

A: We don’t have secrets. And we stay real clean with each other. If we break an agreement or we do something the other doesn’t like, we say so. When all things are known it’s amazing how healthy the relationship stays.

The birthday bunch

Actor Stuart Whitman is 82. Actor-comedian Garrett Morris is 73. Singer Don Everly (The Everly Brothers) is 73. Actor Sherman Hemsley is 72. Actor-writer-director Terry Jones (Monty Python) is 68. Actor-writer-producer Billy Mumy (“Lost in Space”) is 56. Actress Sherilyn Fenn is 45. Singer Lisa Marie Presley is 42. Comedian Pauly Shore is 42. Actor Michael C. Hall (“Dexter”) is 39. TV personality Lauren Conrad (“The Hills,” “Laguna Beach”) is 24.