Charles Krauthammer will definitely not use his psychiatric background to comment on someone's mental state ... unless, of course, you ask him nicely. Then, ethics be damned, the Harvard Medical School graduate won't hesitate to diagnosis a stranger -- namely President Barack Obama -- from a distance. On Monday, Stephen Colbert examined Krauthammer's assesment that Obama is "clearly a narcissist" because he often uses the word "I," but the facts didn't quite add up.