My stomach is uneasy just from reading this thread.
Head cheese. To me, it smells absolutely repulsive. My ex's dad loved it and his wife would always make him sit outside to eat it. lol
http://en.wikipedia.org/wiki/Head_cheese
Neck bone. Again, I can't stand the taste or the smell of it, but my mom cooks it down with "collagreens" (collared greens :P). I just hide in my room while she cooks it and I eat around it when I'm eating the greens. Every time I look at it I just think, 'who puts themselves through this misery?' And then there my parents are, going to town.