The first two-hour installment of the Sci-Fi Channel's mini-series FRANK HERBERT'S DUNE broke the network's ratings records. The Sunday, December 3 9 pm broadcast scored a 4.6 rating and reached 3.06 million households. The final two installments aired on Monday and Tuesday at 9 pm. The previous record was set in June with the premiere of Sci-Fi's THE INVISIBLE MAN, which garnered a 2.4 rating in cable homes, reaching 1.534 million households. Sci-Fi has signed John Harrison, the writer-director of the first six-hour mini-series, to write and direct a sequel.