LOL, I know I'm not supposed to be responding in this manner, but seriously, I HAVE to and I hope the mods are cool with it.
Windows Lighting Control: FAIL
Windows Video Surveillance: FAIL
Windows Telcom: FAIL
Windows Alarm/Motion Detection: FAIL
Dude, when someone rings my doorbell, whatever media I have playing pauses and a wireless camera above my door displays the video of the person on every TV in my house.
When I go to bed, I select "Sleep" on any orbiter in my house (or in my yard for that matter using my wireless webpad), all the TV's/AV equipment in my house shuts off, every light in my house shuts off except my porch lights and one hallway light. Although I don't have it setup yet, in the future my house will call me and display video of the person ringing my doorbell on my phone and I will be able to talk to them through a speaker at my door from my cell phone. Did you get that? My HOUSE will CALL me!!!
Comparing LMCE to WindowsMCE is like comparing the Internet to a telegraph, they are two different animals. The list of things that LMCE can do that WMCE cannot goes on and on.
If all you want is media control then there are a lot of options out there, one being WindowsMCE. If you want centralized, customizable, scalable, complete home automation/control AND media control, there is only ONE option, LMCE.