The Olympics have already paid off handsomely for General Electric, NBC's corporate parent, GE Chairman Jeff Immelt said today (Monday). In an interview with the Associated Press, Immelt said that in addition to the reported $1 billion in ad sales generated by the Olympics for NBC, sales by GE subsidiaries of power and other equipment for the sports venues have brought in another $700 million. He reiterated that GE has no plans to sell NBC. "We've never contemplated it We don't think about it. We like the business," he said. Asked what he thinks about the ribbing meted out to GE executives on the NBC comedy 30 Rock , Immelt replied, "I think it's funny. If a show is good and gets good ratings, I don't mind if they poke fun at their parent every now and then."