There's a scene where Joey thinks that Monica is attracted to him. This is a partial nod to what the show's creators had planned before all of the casting of the roles had been completed. They had originally planned on Joey and Monica being the first couple to emerge from the group; but when Jennifer Aniston was cast to play Rachel the idea was changed to Ross and Rachel being the first couple.
This episode was partly the idea of the cast to see how audience responded to certain couplings, the main one of these being Rachel and Chandler. The audience didn't like seeing these two together, so they never were.
Marissa Ribisi portrays Rachel's friend Betsy in this episode. She is the twin sister of actor Giovanni Ribisi who portrays Frank, Jr (Phoebe's half brother), in the previous episode The One with Frank Jr. (1996).
Mr. Heckles appears for the last time in this episode, as his character had already died in the second season.
While Phoebe and Ross are making out on the pool table, Ross says "ow" and pulls an 8 ball and the 4 ball from near his waist. A few seconds after Phoebe begins laughing, you can hear her say softly, "I can't" through her laughter.