So I read this article today from TUAW... http://www.tuaw.com/2009/02/17/tuaw-tips-maximize-battery-power-for-gps-apps/ It talks about how to save battery life by turning off certain features. Well this got me thinking, what if Apple designed a way to quickly and easily change the "mode" of your iPhone (i.e. Airplane, Meeting, Gaming, Power Saver, etc.). I think I've come up with a great way of implementing this. By simply holding down the sleep/wake button, which usually brings up the power off slider, you could have 4-5 options appear. These would include Turn off slider & cancel (the usual) and Power Saver, and two other customizable modes. So what do you all think? I figure maybe Apple will listen in or someone can write an application for jailbroken phones.