i may just have missed it, but how did wayne know to pull harvey out of the party? was he listening to the police wires?
why did he ask fox for the high-altitude breathing apparatus? did he ever use it?
why did i start laughing just before rachel died?
where did the joker's hostages at the end come from?
SPOILERS AHEAD
GO SEE THE FUCKING MOVIE!!!!!
The party that the Joker gate-crashed was a fund-raiser for Harvey so he was always the likely target.
Also, Harvey had pissed off the Gotham mafia so....
He used the high-altitude breathing apparatus when kidnapping the Chinese dude.
He jumped off the big building & got picked up by the plane.
Not sure why you started laughing just before Rachel died.
I assumed the hostages were from the hospital.
The "hostages" were dressed as doctors, if I remember correctly.