Ray Embrey: People don't like you, Hancock.
Hancock: Do I look like I care what people think?
When Hancock puts the woman on the hospital bed near the end of the movie when he walks out he walks into the metal bar holding the window in place and as a result it bends. In the next shot where you see the frame it doesn't even have a scratch let alone being bent.
Will Smith has his own signature line, which is called 'Oh Hell no.' He says it at least once in almost all his movies, including this one.