Take2 has released a couple of new Bioshock trailers offering about 2 minutes worth of gameplay footage.
Taking full advantage of both Microsoft platforms, BioShock takes place among the ruins of an underwater utopia. After your plane crashes into icy, uncharted waters, you discover a rusted bathysphere and descend into Rapture, a city hidden beneath the sea. Constructed as an ideal society for a hand-picked group of scientists, artists and industrialists, Rapture collapsed under the weight of its own idealism. Now the city is littered with corpses, wildly powerful guardians roam the corridors, mutated little girls scavenge the dead, and genetically modified citizens ambush you at every turn.
BioShock is in development for Xbox 360 and Windows and will be released in 2007.