Definitely mine! i loved how he got rid of Batman's campy image from the 60's and rebooted him back to basics in the 70s as much as Frank Miller and Alan Moore did in the 80s.
His version of Gotham is quite unique and realistic, i even like how he explores in the characters and all that. And when i see Nolan's Batman films, they remind me of O'Neill's version which is why i love Nolan's films.
Man Who Falls is one of my favorite Batman stories.