I really wish I had that trait, but instead I have the exact opposite. I often need about twelve hours to feel fully rested, and even then usually require a coffee or two to feel productive. Some people suggested recently that maybe I have sleep apnea, so I'm planning to try a sleep study sometime soon.
Do you get much exercise? For me, the more I sleep and the more coffee I drink the more tired I feel. As soon as I throw in a bunch of exercise, I find I'm asleep within 30 seconds of hitting the pillow, and I'm awake ~5 minutes before my alarm after 8 hours, and I feel good. The more exercise I get, the less coffee I drink too, until I drink none, which is when I feel the best and least tired.
Edit: 12+ hours not all the week. Most certainly a crash 1 time/w. The sleep/insommia vary each day. I have used sleep pills (make me sleep, but get grovvy all the day) and melatonin (sometimes work, but sometimes get me grovvy).