yup. i haven't been able to buy an "off the rack" hat since i was about 12 years old - and i was wearing adult men's size hats then. it runs in the family. i've also been told by a forensic anthropologist that i have an "old style" skull. he said that, basically, in caucasians there are now two basic skull shapes - long and round. long is the archaic version, round is the more modern. the large, long-heads are prevalent in places like scotland, ireland, and parts of viking territory. unfortunately, that's about all i remember of the discussion - it was like 30 years ago!
i think there's been a thread on head sizes on wp in the past. but it's been a while.