For the 2019 animated film, go here.
- Career Resurrection: Jim Lee was one of the creators who helped usher in independently-owned comics with Image Comics and was a popular artist during The '90s thanks to his work on X-Men. After this though, he fell into relative mediocrity with little to no notable additions to his resume. Then came Hush and his career was revived in a big way, leading to him eventually being granted the position of DC's co-publisher.
- Limited Special Collector's Ultimate Edition: DC’s first big return to these since those carefree days of the 90s. They went through about six reprints of the Superman-vs-Batman issue (#612) based on the cover alone.
- Reality Subtext: The instigator for this whole plot is that the Riddler learned he had cancer and broke into one of the Lazarus Pits to heal himself, whereupon the Pits' insanity-inducing chemicals gave him the mental clarity to figure out Batman's secret identity. In real-life, this story was published around the time Jeph Loeb's son Sam was first diagnosed with cancer - which would ultimately take his life a few years later. Really brought home when The Riddler explains it all at the end."Cancer. It brings people together in a way that… well, you don't have it, so you wouldn't understand."
- What Could Have Been: Loeb had originally planned a six-issue followup addressing dangling plot-threads like Harvey Dent's 11th-hour reformation; these plans were apparently important enough that Dent was shelved for three years afterward, only returning (and getting re-scarred) after Infinite Crisis rearranged the DCU.
