When Lucius asks Bruce if he thinks Daggetts up to something, Bruce replies "that goes without saying doesn't it?", this is almost identical to a conversation Bruce had with Alfred where Bruce says, "Roland Daggetts up to something Alfred" and Alfred replies, "That almost goes without saying doesn't it sir?".
The clerk of the Batman tourist shop (the one having a little boy wearing a Batman costume) great resembles the clerk taken hostage by the shotgun madman.
When Batman confronts Crocker and Nitro, they are getting into a truck that has: "J. Olsen and Sons, Photography Equip, Discount Prices" written on it.