getting android G sensor vals? (& PPM question)

Looking at buying a Mega 2650 to tinker with.

If I put a BT module on it to control via my android, would it be possible to have it read the G sensor values automatically, or no?

What are practical uses of this? Seems to me typing letters still take a reaction time (with how the keyboard autohides), versus having a control GUI where you just tap an arrow?

found this: Arduino Playground - HTCDesire
and this: http://www.karelbruneel.com/blog/2011/01/steering-wheel/

Also, when setup to get RC inputs of PPM using the diode method, is it possible to have the arduino send the PPM values to my phone, so that I can properly calibrate my code for the PPM values?

If I put a BT module on it to control via my android, would it be possible to have it read the G sensor values automatically, or no?

Not unless you program the android to send accelerometer data to the BT module.

from what I read in the links i supplied, It seems integral to amarino?