PM&R. Preventive medicine/occupational health. Radiology subspecialties (or even general Rads if you belong to a group with a night owl or two). "Doc in a box". Hospitalist (especially in teaching hospitals, where they don't need a house doc at night). Medical clinic at a hospital - the worst is evening clinic until 8pm once or twice a week, one or 2 months per year. Cosmetic surgery. Pathology in a private hospital. Anatomic pathology (especially forensic), although not quite, because you have to work weekends (because, for some reason, them people just keep on keepin' on kickin' it!) - in Brooklyn, they do ~10 PME's a DAY, EVERY DAY, ALL YEAR.
Dermatology - although, theoretically you could have an emergency, but the most emergent derm problem (Stevens - Johnson Syndrome) usually goes to Burns or the SICU.