Bill O'Reilly got into a shoving match with an Obama staffer. John Dickerson has a good write-up. My particular favorite moment is when Bill-O get heckled with shouts of "falafel."
I swear, if it had come down to fisticuffs and we got a photo or video of Bill-O getting punched by an Obama staffer, it would be worth 5% in every Democratic Primary held this year.
UPDATE: Keith Olbermann gives the incident the coverage it deserves, with a Puppet Theatre recreation. Sweet.