I found these accelerometers by Analog Devices and thought they might be useful for anyone wanting to try data aquisition on the cheap. They are surface mount chips with no housing, so you will have to do some of your own work. There are several models available:

+ 1.5 g: http://www.analog.com/Uploaded...a.pdf

+ 2.0 g: http://www.analog.com/Uploaded...a.pdf

Evaluation board: http://www.analog.com/Uploaded...a.pdf

+- 10 g board: http://www.analog.com/Uploaded...b.pdf