Stephen BurkeWhen news of Comcast’s bid for NBC Universal broke on Sept 30 most of the spotlight focused on Comcast chairman and CEO Brian Roberts.

But as the weeks dragged on, some of that spotlight began to shine on his number 2, Stephen Burke, chief operating officer and a former senior Disney executive.

As we now know since the deal was confirmed on Dec 3, NBC Universal’s top brass will report to Burke, making him (once you count the 24 million subscribers he also oversees) one of the most powerful men in TV.

Now, as if he won’t be busy enough taking drape measurements at 30 Rock, Burke has added another feather to his cap. Warren Buffett’s Berkshire Hathaway said this morning that he will join the board.

While it may be sign that Buffett is opening up his board to outsiders, it’s also a sign that Burke has become a force to be reckoned with in the corporate world. He already serves on the board of JP Morgan, which as you might recall had a lot to do with engineering the NBC deal — JPMorgan was the banker for NBC parent General Electric.