The One With Phoebe's Ex-Partner

S3 E14: Phoebe is reunited with her former singing partner, Leslie, a failed television commercial jingle writer who wants to use Phoebe's signature song `Smelly Cat' in an advertisement for cat litter. Meanwhile, Ross becomes jealous when Rachel agrees to go to a fashion lecture with Mark, a former colleague who has just left for a new job, and Chandler meets a beautiful woman, Ginger, who has a prosthetic leg.