The Apprentice (2004) - 7x04 - A Knight on Broadway

Each team runs a one-day Broadway ticket booth, and the celebrities work feverishly, hawking tickets on the street. Two celebrities begin the task on the wrong foot, with a bitter argument. David Hyde Pierce shows up to assist one team. A celebrity puts on a knight's costume to sell tickets to Spamalot, looking like a fool, but bringing in customers. Friends of another celeb get stuck in traffic as they race to the scene with an enormous check for tickets. In the end, the team that makes the most money from ticket sales wins, and one celebrity is fired.