He may lapse back into his Camus coma at any moment. But on Friday he dropped the diffident debutante act and offered, as he did at the State of the Union, some welcome gumption.

“You know,” he said, halfway through his sparring session with Republicans, “I’m having fun.”

When he was running for president, John McCain said that if he won, he would regularly take questions in the peppering style of the British prime minister in the House of Commons.

But it was Obama who ended up doing just such a Ping-Pong session, standing in a hotel ballroom and giving as good he got, to-ing and fro-ing in a far more vivid way than in the presidential debates.

The president chided his audience for casting his health care plan as a “Bolshevik plot” and for telling folks back home that he’s “doing all kinds of crazy stuff that’s going to destroy America.” But Obama also acknowledged that the Republicans have some good ideas, and that, as it turned out, was what they yearned to hear.

In the end, the Republicans may well go back to being inflexibly inflexible with this president, but for a moment in time, each side realized that the other side had something to say. It was, as The Times’s reporters Peter Baker and Carl Hulse called it, a televised marriage-therapy session “as each side vented grievances pent up after a year of partisan gridlock.”