Do any of the current controllers incorporate a PC interface? I know that some of them can be updated with a PC-but I'm looking for one that can actually be controlled with a PC.
Most of the current ones can (Aquacontroller, Reefkeeper). There's a serial port on these controllers. The Aquacontroller has a software that allows you control your controller from your PC and even over the internet. You can turn stuff on and off thousands of miles away just to scare your fish.