What do you want to see the Vitality Senso used for?

[Ninten78]

There are lots of big possibilities for the Sensor and Nintenod says they've got creative ideas(no surprise)what ways do you think this should be used?

Apart from the obvious horror games,why not use it for underwater parts of a game? {I think this is more important than arc/natal,my opinion though people will be paying attention to this and at E3}