Looking for interesting ideas: remote control via a PC

Hello,

I'm pretty new to robotics, but I've been in IT for a long time and
I'm pretty good with all things systems (including C/C++, memory I/O,
etc). I'm looking for ideas on a Master's project in software
engineering. I'm really interested in embedded systems of all types,
so I was thinking of writing a program that would remotely control
some sort of a toy robot, say a toy car, from a PC. The control
protocol would be either IR or Bluetooth or RF, or something similar.
Since I'm new to the actual control part, I'm looking for some advice
on where to start, which protocol/solution to spend time on, etc.

Thanks.
.

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