According to those ever-quotable "people familiar with the matter," Steve Jobs is still "closely involved" in "key aspects" of running Apple, reports the Wall Street Journal. While Tina Fey's favorite keynote-giver has remained incognito ever since he took a medical leave in January, the WSJ has learned that he's been working hard from home, involved in strategy and key products -- including some nitty gritty of the new interface elements in iPhone 3.0. Apple's of course remaining tight-lipped, merely stating that "St
