Alan Greenspan is getting hitched. The Fed chairman proposed to NBC-TV correspondent Andrea Mitchell on Christmas Day after dating for 12 years. "We have a huge amount in common," Mr. Greenspan told The Washington Post. "It's really a great match." They are planning a spring wedding. Still, not all the news was good last week for the Fed chairman. The Post declared Mr. Greenspan "out" on its annual list of who's in and who's out. "Irrational exuberance" - the phrase Mr. Greenspan used to describe the stock market's inexplicable growth - is "in."