Jersey Shore just keeps growing and growing. Last night's season premiere of the MTV reality series was the cable network's most-watched opener to date, drawing 8.8 million total viewers , improving 4 percent over the third season opener earlier this year. Jersey Shore also beat broadcast's top program, CBS' Big Brother , in total viewers (8.8 million vs. 7.3 million). Though last night's episode was a premiere high, a Jan. 20, 2011 telecast delivered a series best in total tune-in, averaging 8.9 million. That episode showed Snooki being released from jail and Deena meeting a Ronnie look-alike. The premiere episode, set in Italy, was also Jersey Shore's third most-watched telecast to date, behind two Season 3 episodes. In the persons 12-34 demographic, the Jersey Shore premiere scored a 8.2 rating, or 6.5 million viewers. Please Leave A Comment- Source- THR