Parenthood will have to wait

As many gossip magazines like to say, celebrities -- they're just like us! Which means in addition to cleaning up after their dogs, donning sweatpants, and not wearing makeup, they also get sick. However, when they get sick, it can mean trouble for television schedules -- just ask NBC.

Actress Maura Tierney, star of NBC's upcoming hourlong dramedy Parenthood (a remake of the Ron Howard movie of the same name), has fallen ill with an undisclosed ailment; she's expected to take eight weeks to recover. As a result, NBC is delaying the start of Parenthood from fall to mid-season, according to The Hollywood Reporter.

[UPDATE] Tierney has spoken publicly about her illness: "I have discovered a tumor in my breast which requires surgery," Tierney said in a statement. "I will not know either my exact diagnosis or course of treatment until that surgery is performed. My doctors have all assured me this is a very treatable condition. I'm very optimistic as to the outcome and want to thank everyone who has sent positive thoughts and support. I look forward to going back to work soon."

Playing surrogate to Parenthood will be the medical drama Mercy, which was originally slated for midseason. The show follows the relationships between three nurses who work at the same hospital. Mercy's producers have allegedly sounded the alarms and the cast is now jumping into production for a September premiere.

This means Michelle Trachtenberg will be one busy woman. As one of said three nurses in Mercy, she's got a full-time gig starting immediately. But as fans of Gossip Girl know, she's also set to return as Georgina on the CW teen soap. Though it sounds like a lot to handle, Zap2It says the actress will perform both duties.

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