Blythe Danner is staying 'Up All Night' with Christina Applegate.

According to Deadline, Danner will play Applegate's mother on the NBC comedy about new parents.

Danner is no stranger to playing mom to an NBC star. The Emmy winner recurred on 'Will & Grace' as Will's (Eric McCormack) mother.

'Up All Night' debuted to strong ratings, grabbing 3.7 million in the coveted 18-49 demographic and a total of 10.9 million viewers.

In other casting news ...

Louis Gossett Jr. discussed his recent diagnosis of prostate cancer on 'Good Morning America' (weekdays, 7AM ET on ABC), and strongly suggested that all men over 50 years of age have regular prostate screenings.

Gossett was upbeat and reported that doctors detected his disease in its early stages. However, he recommended that all men of a certain age undergo regular examinations to ensure a good prognosis.

Watch the video after the jump.