GOOD NIGHT AND GOOD LUCK. Keith Olbermann's Special Comments offer a fascinating echo of Edward R. Murrow's eloquent news reports. At the same time, Olbermann's passionate voice is something that has long been missing on the liberal or progressive side of the political media. He talks unabashedly about values, many of them clearly progressive ones, in a climate where the term "values" is still used as shorthand for conservative sexual morals.