Well, I don't know about my current place, as I can't get numbers other than a 12 month $ average, but my temp summer apartment (2bedroom) showed the previous tenants used 500-700kWh during the winter, and 300-400 during the summer. While I was there my roomie and I never broke 150kWh. We were never there anyways, always outside playing or working.
At my current apartment, the previous 12 month average was $50. So far for 4 months I'm at $59 for the winter months. I've got gas and electric, so slightly more difficult to make a nice graph, but I'll be at this residence for several years (till school is over) so I should make a nice baseline. The Kill-a-Watt (KAW) should help that.