Yeah, basically i have unintentionally created a complicated voltage divider.
ImageShack - Best place for all of your image hosting and image sharing needs is the diagram. The diagram isn't proper though so i'll explain. All the sensors say they go to 5v+ which means they are connecting to that 5v+ breakout pictured at the top right. (I know this is going to sound cheesy but) The breakout is essentially a single row of an IC socket with all the pins connected on the bottom. This way I can plug a wire from the 5v pin to the first spot on the socket and then plug everything that needs power into the other sockets.
I am sure they are effecting each other as i get different readings/button presses based on where I plug them in in this configuration.
So it looks sort of like this.
5v+ temp1 temp2 temp3 buttonA buttonB pressure accelerometer
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And the ground looks about the same way:
Gnd temp1 temp2 temp3 buttonA buttonB pressure accelerometer
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These all seemed to work together when they were crumily wired from a single point.
/-----a sensor
5v+ ---- a sensor
\ ----a sensor