 Theres a homage to _Texas Chain Saw Massacre, The (1974)_ (qv)  regarding each films leading ladies Erin (2003) and Sally  (original). In the remake, Erin pulls out a knife to unpick a lock.  When asked where she got it from, she replies "from my brother". In  the original Texas Chainsaw Massacre, Sallys brother Franklin is  obsessed with his knife, and at one point in the film gives it to  Sally. She never returns it.