BioShock 2's remote-hack mechanic had me intrigued but it was a little difficult to visualize. This minute-long gameplay trailer shows how the new hack meter, helps you mow down a herd of splicers while Little Sister says pouty, creepy things.
If you want more visuals, there are two additional gameplay vids for BioShock 2 over on GameTrailers - deathmatch and the harvesting choice.
BioShock 2 Videos [GameTrailers]