Heartwarming / The Comedy of Errors

• The very end, when both Dromios are trying to decide who takes precedence by virtue of being older, and decide to go in to the feast hand in hand, because they're brothers.

• Emilia and Egeon meeting. After 20 or so years of thinking the other is dead, the couple reunites. They clearly still love each other as much as they did when they were separated.
  Emilia: Speak, old Egeon, if thou be'st the man / That hadst a wife once called Emilia, / That bore thee at a burden two fair sons. / O, if thou be'st the same Egeon, speak, / And speak unto the same Emilia!
  Egeon: If I dream it not, thou art Emilia.