Showtime has renewed original dramedies "Weeds" and "The Big C," picking up a 13-episode season of each -- the first pickups for new president of entertainment David Nevins.

"Weeds" is currently in its sixth season; "The Big C" debuted in August. The series premieres of each scored record ratings [5] Aug. 16. Nevins announced the pair of renewals Monday. 

“The unprecedented viewership for both 'The Big C' and 'Weeds' proves that audiences love these shows as much as we do ... We’re thrilled that these two signature shows will be returning to the network in 2011,” Nevins said. 

Nevins took over [6] as Showtime's president of entertainment June 28 following the departure of Robert Greenblatt.

"Weeds" premiered in 2005. It stars Mary Louise Parker as Nancy Botwin, a suburban soccer mom who becomes a drug dealer after the death of her husband. 

"The Big C" stars Laura Linney as Cathy Jamison, a teacher who faces a terminal cancer diagnosis. Gabourey Sidibe  plays one of her students and Oliver Platt plays her husband. 

While the most recent two seasons of "Weeds" earned mixed reviews, "The Big C" has drawn raves from critics. At the Television Critics Association summer press tour in August, "Big C" creator Darlene Hunt said the show could survive for many more season [7]s in spite of the dire prognosis for its protagonist. 

"Every season is a season, so in the pilot episode, it's the first day of summer, so the first season of the show would be summer, and the next would be autumn and so on ... So, six TV seasons really only amounts to eight months of Cathy's life," Hunt said. 

With season two of "The Big C" officially locked up, it's safe to say that Cathy Jamison will be staying alive for at least another few months. 

(updated 2:45 p.m.)