I have Tasker and Automateit... I prefer Automateit because it's easier to set up.. I have the following rules set:
Speakerphone enabled when device is away from face, disabled when close to face.
Brightness at 100% when opening Quickpic, back to 40% when I exit.
YouTube auto rotates when launched.
Disable wifi and kill Y5 when launching Wi-Fi tether.
Volume on for VIP contacts.
Volume on after 911 text.
Notifications and sounds silent when in appointments.
Announce "Welcome home" when I arrive home.
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