The intersection of Bruce and Selina's romance (very lonely, disturbed people finding warmth in their shared duality), the Penguin's anger and resentment over his parents' abandonment, and Shreck's relationship with his idiot son (wherein he finds the one shred of selflessness in his otherwise irredeemable soul) is something no other Batman movie has even approached, let alone surpassed. The desperate human need for family is the very core of Batman, and this movie is the only one that really,
really shows it.
Returns is bizarre, gross, nonsensical, and preposterous. But its emotional core is so solid and absolute, and the score and visual design so harmonious and persuasive in service of that core, that it stomps every other Batman film into the fucking dirt.