Sean Bean spent little time with his young co-stars so as to distance their relationship and make himself seem more unknown and menacing. He believed this would drive the chemistry in a more realistic fashion.
Rutger Hauer who played the character of John Ryder in the original was offered a cameo, but declined for artistic reasons. Hauer has since said in the press that he has yet to watch the remake, and according to some of his friends he shouldn't bother.
Jessica Biel turned down the role of Grace Andrews while Britney Spears was considered for the same role.
The song that plays at the beginning of the movie "Move Along" by the All American Rejects is also in the tv show Sophia Bush is most known for, "One Tree Hill"