More fun came from Ross (Schwimmer) trying to teach everyone the mental discipline Unagi, popping ridiculous moves with Monica for their childhood dance routine and having a fluorescently dazzling smile in "The One with Ross's Teeth" (also featuring a near-silent cameo from Ralph Lauren). Far more talkative was Reese Witherspoon as Rachel's (Jennifer Aniston) sister--another temptation for Ross. What they briefly had wasn't as complicated as later in "The One Where Ross Meets Elizabeth's Dad," who turns out to be an Emmy-winning Bruce Willis (thanks to having become friends with Perry during The Whole Nine Yards). The fans' need for love interest and continuity had established the seasons' format now. Another two-part finale offers jeopardy--then resolution--from Tom Selleck's Richard in "The One with the Proposal" between Chandler and Monica. --Paul Tonks