For one of the few times in the series, Leonard gets drunk.
Raj reveals that The Good Wife is his current favorite TV program.
Sheldon: (about Zack) He must be very skilled at coitus.
Howard mentions that he's found a new dating site and has had eight dates in the past month. What's happened between him and Bernadette? Have they broken up? Nothing is mentioned in the dialogue about her or the status of the relationship.