Rachel has to return Barry's wedding ring and is absolutly shocked to hear that he hooked up with her maid of honour Mindy. Ross is also in for a surprise when his ex-wife Carol tells him she's pregnant and she wants to raise the child with him and Susan, her girlfriend. Meanwhile Monica dreads the visits of her parents because they seem to pick on her every single time.
I liked this episode very much because I always liked Ross and Monica's parents and their liking of Ross and critizing of Monica. I kinda dislike the fact that they changed Carol but this episode also marks the beginning of the fight between Susan and Ross which will get even funnier. Additionally we learn more about the six friends, their background and there are just so many good jokrd - as always.
All in all, this is a very good episode which introduces many future guest-stars.