Remakes and Movies Worth Making

Right now I'm reading through Charles Dickens' A Tale of Two Cities.  I'm again astonished at how wonderfully tight, personal, and yet epic in scope the plot of this novel is.  Really, it ought to be a great movie, but there hasn't been a serious attempt to film it in decades, and certainly no definitive version.  I'd love to see a big budget movie that deals reverently with the source material and gets this story right.

What we certainly don't need is Hollywood making new versions of movies that have already been done right.  Hollywood is reportedly remaking Rebecca, which Hitchcock adapted masterfully in 1940.  It needs no remake, it just needs modern audiences to get over their phobia of black and white film.  Worse, there is also a My Fair Lady remake in pre-production.  Tell me honestly, what can they possibly improve on?  How could this remake even remotely be better than the 1964 classic with Rex Harrison and Audrey Hepburn?  (aside from the decision to dub Hepburn's singing voice, I can't name a single flaw in the first My Fair Lady.)  Some movies just plain should NEVER be remade, and My Fair Lady is one of them.

Could you imagine a remake of Citizen Kane?  The idea is nigh unto blasphemy! (ok, not quite that far!)  How about Casablanca?  The Godfather?

But for all my indignation at the whole concept of remakes, I have to admit there are times when a remake is a good idea.  The 1959 Charlton Heston classic Ben-Hur is technically a remake; the story had first been very successfully filmed in 1925.  However, that version was silent, and limited by the techniques and technology of its age.  By 1959 they had the technology, the know-how, and the budget, to give the story the enormously epic treatment it deserved.  That was a remake worth making.

So Here's The Question:
Are there old movies that Hollywood really SHOULD remake?

I've got perhaps one or two:
-Godzilla.  Now understand: the original (Japanese) is a classic that is amazingly influential.  But it hasn't aged well as a film.  The special effects were amazing in its day, but now it just looks like a guy in a rubber suit stomping on models.  Plus, they (SPOILER ALERT!) kill it with an "oxygen exploder."   I swear I'm not making that up.  Time for a good remake.  The Matthew Broderick version doesn't count, 'cause I said a "good" remake.  And believe it or not, there is one scheduled for release in 2014.  We'll see if it's good.

-Metropolis.  This is a classic silent film that simply set all kinds of trends for science fiction.  But it is a stinkin' long film (153 minutes of no talking is LONG) that feels every bit as long as it is, with groundbreaking yet questionable special effects.  Time for an update with sound.

So what do you think?  Are there remakes that ought to happen?