Resurrection Day would be perfect as a movie. You might have to tighten the story up a bit, but it could be done.
The Years of Rice and Salt, to me at least, seems like one of those arty films, or, more sensibly, a 6-7 part miniseries on public TV. You might have to cleave some of the metaphysical dialogue though (which might be a blessing...).
I've also been wonering for some time if anyone has a really good idea for a "US gets invaded" movie that won't degenerate into a lot of obvious chest-thumping patriotism (well, it can have that, but not too much). I think "Not This August" has a possibility, but I haven't read it yet, so I don't know.