16 1.16 The One with the Two Parts, part 1

Chandler and Joey meet Ursula, Phoebe's twin sister; Joey begins dating Ursula, but that bothers Phoebe, who doesn't get along with her sister very well. Ross attends Lamaze class with Carol and Susan; Carol isn't sure she can go through with the delivery; Ross realizes he's really going to be a father. Chandler can't bear to fire an employee he's attracted to, so he starts to date her and tells everyone else she's mentally unbalanced, so it isn't safe to fire her; she begins to notice people treating her oddly, so Chandler has to come clean. Ross has trouble controlling his monkey, Marcel, who switches Monica's TV into Spanish mode; no one can figure out how to switch it back. Mr. Heckles could have cats. Jamie and Fran (from Mad About You) make an appearance in Central Perk. Rachel finally gets around to taking down the Christmas lights, but falls off the balcony in the process, and ends up hanging upside down outside Mr. Heckles' window.