I love seeing different applications like this one. Basically they’ve created an HME application that allows users of the HomeSeer home automation system to control devices in their home from their TiVo. It looks like it was released in December. Control your lights, thermostat, etc – all from your TiVo remote. Here’s a discussion thread with screen shots, but you need to sign up to access them.
I picked this up from a post at DVR Playground.