Originally Posted by KevB
Go look up Tasker. It does that and so much more.
I'm not sure why it took me until now to find this thing, but man it's cool. I've got it set to make sure WiFi is turned on when I get back home and that the volume's cranked so I don't miss calls, automatically start my music when I plug it into my car in the morning, and vibrate when I get to work, and that's after just messing with it for a couple hours. Friggen cool app.