Install the app "Quick Boot", go to Settings > Applications > Quick Launch. Tap on any letter of the alphabet that you would like to have assigned to launching the Quick Boot app (I chose the letter "R" because it's easy to associate that with the word 'reboot').
Now, whenever you have the urge to do a quick reboot on your device, hold the Android search key (it's the physical key that looks like a Magnifying Glass) and tap the letter that you assigned earlier. Quick Boot will open. I then tap "reboot" and the phone reboots. The first time that you use this app, it will ask you to "Allow Superuser Access": Select "allow"..or "yes", etc; You only have to do this once.