This episode was a crossover with the NBC sitcom Caroline in the City, hence the surprise guest star. The important plot points: Ross' son, Ben, is "misplaced" on a bus by the errant Chandler (Matthew Perry) and Joey (Matt LeBlanc). Ross (David Schwimmer) has a disturbing reaction to Monica's (Courteney Cox) kiwi-lime pie. And Phoebe (Lisa Kudrow) doesn't get to sing at the Central Perk tonight -- but she does get to perform anyway. The DVD version of this episode includes material not seen in the syndicated version. ~ Hal Erickson, Rovi