This is less about what I feel is the coolest part of my system - more what my kids think is the coolest part. I just completed and released the 'Santa Tracker' plugin stored under iFindStuff posts which, on the night will provide a real time update of Santa's position, arrival time at your home and a wealth of statistics. Right now it runs as a simulation using NORAD data from last year and the kids love it and they're looking forward to the big night. So £1,000s spent on Home Automation equipment and a small plugin is what makes it 'cool' apparently. BTW my kids are 16-24!
Mike (Chameleon)