I just found an app called Call Confirm that forces your phone to display a confirmation screen before it places a call. This way if your phone attempts to randomly, unintentionally or you accidentally place a call, a screen will appear that prompts you to press Ok or Cancel before it dails a number. The app also, has a bypass when using Bluetooth features (which is under Preference, the button presented when you open up the app), which bypasses the Call confirmation screen when you're doing Bluetooth hands free calling. And hopefully your phone is doing Bluetooth call confirmation, which was not the case with my Droid 2.2 update, so I had to get an app for that, which is Choice Dialer. It's ashame that we have to download all these apps just to get our phones to function properly
Anyway, the Call Confirm app works, and will prevent your phone form placing unintented calls.