According to the advisory announcing the Sept. 25 event, which will be hosted by Mario Cuomo, the talk "will focus on finding solutions to the national challenges of education, poverty and the environment."

Cuomo has said the discussions - each usually an hour long - are a venue for detailed answers to the questions and issues facing national leaders, who often don't have the opportunity to get into the nitty-gritty aspects of policy while campaigning.

In an earlier interview in the Observer, Cuomo suggested that Bloomberg could yet have a big influence in the 2008 race for the White House, particularly if he chooses to criticize Rudy Giuliani. Could this be an opportunity for Cuomo to bring about a moment that would put that proposition to the test?