I'm usually in bed by 3am. Up for work at 9 or 10. Weekends are all over the place, Friday and Saturday nights can be anywhere from 1am-6am, and Sundays its usually 3am. I usually sleep in til mid-afternoon Saturdays, so I have energy for the night.
Only thing I've noticed from lack of sleep, is that my dreams have become very schizophrenic and I seem to remember them alot more than I used to, they just dont seem to make any sense.