The dark comedy doesn't finish its second season until September 26th, but Deadline reports Showtime is satisfied enough with the ratings for The Big C that the cable network has decided to renew the series for a third season which will start shooting the 10-episode order early next year to debut sometime in the middle of 2012. The series follows Laura Linney (The Truman Show, Love Actually) as as Cathy Jamison who this season become an all-out warrior in the fight against her Stage 4 melanoma, while her husband, Paul (Oliver Platt), stepped up to become her greatest advocate and treatment “cancierge.”