Philip Klein has a column fact-checking the statements made last night during President Barack Obama's press conference. I suggest we all read it.
The New York Times also has a fact-checking piece. More details here at Newsbusters.
The press is supposed to question what politicians say (not just mimic their words and positions and then claim to 'quote them correctly') and check on the statements, comparing them to facts. But the critical part is also to include what they find in the news coverage of the event.
This is good.