8x01 "The One After 'I Do'"

Everybody thinks Monica's pregnant, but her denial quickly shifts the focus to Phoebe, who takes the heat off of Rachel, who is actually pregnant. Chandler's shoes are slippery, rendering his dance lessons useless. Joey tries to impress a Broadway director. Ross dances with children to impress a woman.
Note: This episode is dedicated to "The people of New York City" to remember the September 11 attacks.