When the "Red Dawn" remake was announced four years ago, it seemed like an odd choice. The original was released in 1984 during the Cold War and is very much a product of the early Reagan era when the Russians still seemed to be a threat. As it turns out, the new version (which hits theaters this week) does have modern relevance, though not so much that in 30 years we'll see it as an iconic representation of its time.

Remakes aren't always a terrible thing, but they especially seem unnecessary with films that are, like "Red Dawn," so fitted to a period. Below we present ten era-defining movies where an update didn't make much sense. Some of the second incarnations, however, at least made an effort to find contemporary reason for existence.