Charlene Amoia

It's the holiday season at St. Denis. Alex and Ron care for a patient whose diagnosis is not what it seems. Joyce enlists Serena's help to boost St. Denis' online presence. Bruce and Matt help a Santa in need.

When the gang finds out that Ted is taking his doctor on a date, they try to convince him, through examples of their own toxic experiences, why it's never a good idea to get into a relationship with someone you see on a regular basis.

When Lily and Marshall hear that Ted's college girlfriend, Karen, has moved to New York City, they finally reveal how much they hated her back then.

Marshall goes on his first real date since breaking up with Lily, but his buddies warn him about the inherent dangers of dating a girl with crazy eyes.

When a corporate law firm courts Marshall, lawyer Jeff Coatsworth (guest star John Cho) wins him over, forcing him to let go of his dream of saving the earth in favor of the almighty dollar.

Television personality Regis Philbin meets a burger-mad Marshall while on his quest to find the restaurant where he had his very first New York burger.