"accidentally on purpose." a single woman becomes pregnant after a one nightstand. 8:30 p.m. on cbs. here's a sneak peek. >> i have the baby. >> really? >> you took so long i'm already pregnant with another one. >> here's your ice water. >> thank you. >> anything else i can get for you, dirty stranger? >> doctor, i'm so glad to see. >> i didn't need to see the rolling stones tonight. >> greta: jenna elfman joins us live from los angeles. nice to see you, welcome back to the show. i'm delight your show isn't opposite us. season finale. are you excited? is it sad to see the show