iPhone and home automation

[whitehexagon <whitehexagon@xxxxxxxxxxxxxx>]

I'm interested in what systems people are using for their home
automation?  Ideally consumer targeted systems rather than home brew.

I'm developing a small App (HomeWatch) for the iPhone that currently
works with ioBridge (temperature sensors, x10 controls, servos, etc)
and a couple of internet connected cameras.  I'd like to interface to
more systems, and cameras but I have no idea what people are using.
I've got my front door emailing me, but that was a bit of a hack using
a magnetic door sensor and the ioBridge.  Is there for example a cheap
alarm system that has a serial interface?  And what's the most
consumer friendly way of setting up electrical power usage
monitoring?  Currently most of the projects I'm playing with involve
too much hacking around with soldering irons and Auduinos...