Have the swirling Bats and same music again, maybe have the bats form a joker symbol. Camera pans down to the Gotham cityscape. The Bats swarm past the camera, blending into another shot of the camera tracking very fast over wet tarmac at night, and a man running for his life down a dirty alley. He turns his head to see if he's still being chased, we see fleeting movements on the rooftops above, unnoticed by the man. He turns several corners, stumbling over rubbish bags, reaching the waters edge. Nowhere to run. On the opposite bank, Wayne Tower.
The man puts his back against a warehouse wall, struggling for breath, peering around the corner from where he came. The coast is clear. Fumbling in his jacket he takes out his cell phone, dials a number, warns someone The Batman is on his tail, ends the call. Takes another look around the corner, Batman drops to the ground. The man hasn't even turned round before Batman knocks him out cold. Batman catches the phone, plugs a device into its port, cloning the phone. The calls details are displayed, bringing up a registered address for the number. The grappling gun is fired, then on to the next scene.
Anything really, as long as its fast paced. If it follows the same style as Begins it would be cool.