Titles I brainstormed for the third Batman movie before its real title was announced:
"Knight Moves"
"Duality"
"The Dark Knight Detective"
"The Batman Legacy"
"Escalation"
"Vigilante"
"Midnight in Gotham"
"Exile"
"The Gotham Project"
"Emergence"
"Manhunt in Gotham"
"Batman Endures"
"Silent Knight"
"Knight and the City"
About half of them were jokes that I didn't think could ever happen, and the Woody Allen movie hadn't been announced when I came up with that midnight one. I have to admit, though, I really was nuts enough to think some of these could really happen.
I had way too much time (being unemployed) and was going through an especially obsessive fanboy phase. I hope you're amused. I have re-lived one of my most shamefully lame phases in life for your entertainment.