I cast "thread Necromancy"!
I have a VeraPlus. It controls my iris/zwave thermostat, my pipe heaters, a set of hue bulbs, two zwave locks, a garage door controller, three appliance modules, and a doorbell/mp3 player. It has motion/temp sensors inside and outside, several door sensors, a smoke detector and a flood detector. My pebble watch can adjust the temperature, lock doors and turn off lights.
The Vera emulates an ecobee, using different temp sensors to adjust the thermostat. It uses internet and physical temperature monitoring to keep my pipes from freezing. My doors lock themselves after they have been closed, and I get text/email notifications of unlocked/open doors depending on time of day. My washer pings me when the clothes are done and my space heater turns itself off at bedtime. The "doorbell" gives weather alerts and if the fire alarm goes off, lights turn themselves on. And I get texts in case of fire/flood.
So your basic home automation system.