S8E5: The One with Rachel's Date

Phoebe begins dating a guy who works for Monica as a sous-chef, however, they soon find themselves in an awkward position when things don't work out for either of them. Meanwhile, Ross discovers that a co-worker of Chandler's has been calling him Toby for five years. And Joey sets Rachel up on a date with one of his co-stars, which freaks Ross out when he realizes that this guy might become a step-father of his and Rachel's baby.