Pick: Elgato Eve Light Switch
Stacey Higginbotham's pick on This Week in Google 389 is the Eve Light Switch from Elgato. This is a Bluetooth lightswitch that's compatible with Apple's HomeKit. The switch is actually a capacitive touch panel, so you can do more than just turning lights on and off. It supports gestures that can be assigned to set up scenes.
The Eve Light Switch works with your existing lighting setup and it has an app so you can set up automated routines. You can also control the connected devices remotely if you have an Apple TV.