I’m not sure what’s more annoying: forgetting to mute my phone in important meetings or forgetting to un-mute it afterward.
Fortunately, there is an Android app that has me covered on the latter problem. Shush! is a very simple app: when I mute the phone it pops up and asks me when it should turn the volume back up. Very few apps are this elegant, integrated, and reliable – frankly Google ought to buy this and make it a part of the next Android update.
In the meantime you can get it, free, at the Android Market.