Okay, so some of these are the same as y'alls, but here goes..
people smacking on their food
slurping on soups or drinks
people walking slow in front of you, or just standing there when it's obvious you want to get through
ummm, when people don't capitalize their name or when they write "I" lol
when you're in a store and a girl that thinks shes hot stuff sizes you up to see what their up against.. (but I think most girls do that...it actually more annoys me.. )
anyhow, I have more, but I can't think of them..