[russh]

I remember being tired all day long after waking up many time during the night to check the progress of my renders or to tweak it and restart. And then I got a math coprocessor so I could wake up more often in the night to check my renders.

[qingcharles]

I would just set them before bed and then check them before going to school in the morning, and set another one running, of course :D

[geon]

I too slept badly because of povray rendering. But I just had trouble sleeping with the fan noise.