3x11 "The One Where Chandler Can't Remember Which Sister"

Rachel is angry that her new job at Fortunata Fashions involves nothing more than serving coffee, which she had hoped to never do again. While venting her frustration to Monica she bumps into Mark, an employee of Bloomingdale's who knows of a vacancy in his department. He gets her an interview and coaches her through it, however Ross is suspicious of Mark's motives and is left unhappy when Rachel lands the job since she'll be working directly alongside him. A drunken Chandler fools around with one of Joey's sisters, but can't remember which one.