This application is for you.
If you're rooted you'll be able to select which services or apps you waa kill automagically. The app runs a simple service every X seconds (default is 60s) and checks if those services that you've selected are alive. If they are - BOOM - good night. A small detail though, if that service or app is ruing on the foreground this app won't kill it. It's a small safety measure because you don't want apps that you're using to close on you.
The app operations run in a dedicated Background Thread so that your normal Android experience is not affected.
You can also disable/enable permanently any service on your device. It's useful if you have services that tend to auto-restart and keep your device awake, or if you have games sending you never-ending notifications.
This app is powerful so have some sense of responsibility when using it.
Please contact me before down-rating.
*DISCLAIMER*
I take no responsibility for any fault caused by any procedures of the app. No warranties of any kind are given. Use your brains, you have them for a reason :)