Most justifiable reason for a remake

Which of these is the most justifiable reason for remaking a movie?

Note 1: Please see the comments after each film and vote for a reason listed there. Do not vote for your favorite film on the list.

Note 2: With the exception of the last three films on this list (chosen just for their titles), all movies here are remakes and are examples of the reason that follows.

Discuss here: http://www.imdb.com/board/bd0000088/flat/231824229