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(Photo: Splash News Online) Riding high on the back-to-back success of Dexter and Californication, pay-cabler Showtime is beefing up its roster.

Edie Falco of The Sopranos has been shooting Nurse Jackie in New York, a dark comedy about a nurse trying to juggle work and personal life, while Tim Robbins has been prepping Side Effects, about a family that runs a pharmaceutical biz.

Both shows are slated to debut early in 2009.

Us? We're waiting for Billie Piper to return in Secret Diary of a Call Girl. Shooting is currently underway in England, though with a body double because Billie is preggers.