New Year's Eve brings its share of crises for everyone on the ER staff. In New York, Dr. Burke (Chris Sarandon) performs a risky experimental operation on Greene's (Anthony Edwards) brain tumor. And back in Chicago, the staffers must deal with Dan Harris (Jim Belushi) and his son Paul (Jared Padalecki), both injured in the same car accident -- and they must also deal with the elder Harris' unusual request. ~ Hal Erickson, Rovi