77? Wow! I work from home full-time and keep my thermostat at 64 during work hours because I'm a cheapskate and don't want to heat the whole house when I'm just working in one room. Sometimes I'll use a space heater when I just get too chilled, but those things scare me (I always worry about forgetting to unplug it).

When I still worked in an office, the temperature was never right, always too hot or too cold!