With only supercomputers or clusters on the list it's boring.
There should be something like this for 1-max. 8 cores single computers.
And all these big machines doing a good computation per watt are useless when they don't numbercrunch all the time. I guess even a minute idle of the huge ones could give me the power to compile libreoffice on my home quad core (and that takes roughly 1.5 h).
I admit that compiling for yourself isn't the most power efficient thing to do.