Very interesting thread!
I agree with a lot of the pet peeves already named on here... but for my personal self, the biggest is the looks I get when I go into a regular size clothing store (especially lingerie), and the sales girls are probably asking themselves in their head why I'm even in there. Another one, definetly the fat kids... or the overweight parents themselves that continue to eat horribly. There's one lady at work, and her and her family are very very heavy - she always whines about how its health problems then I see her having a Big Mac Meal Supersized, or Pizza, or anything else thats horrible for you for lunch!
And, another main one is I think I will be a little self-concious when I do lose the weight I want - I mean I'm sure i'll love the "You look great" comments but not so sure about when people ask about how much I lost, and tell me how much better I must feel?!
Anyways... i'm rambling so outta this thread I go.