This episode is called a "bottle episode" where the crew has a limited budget. This is why most of the show takes place in Monica and Chandler's apartment, aside from the opening scene at the coffee house and the couple of seconds Chandler is on the phone with his boss. This is also why the episodes consists of mostly the main cast.
One of the episodes that was submitted from the show at the Emmys for outstanding comedy series.
The episode mostly revolves around a lottery for 300 million dollars. At one point Joey suggests to Chandler that they should pool all the money and buy the New York Knicks. This would not have been possible, as the franchise value of the Knicks was 398 million dollars by 2003.