In the fourth season, Debra toys with the idea of getting an "enhancement" after ruefully witnessing Ray's excited reaction to her friend's newly enlarged breasts in "Boob Job." Ray and Debra renew their wedding vows after discovering that Ray has accidentally used their wedding tape to record the Super Bowl in "The Tenth Anniversary ." The season ends with another crisis in the relationship between Robert and Amy, as Robert's ex-wife Joanne pops up out of nowhere in "Robert's Divorce."