What do you get when you cross a Hallmark movie and the end of the world (or the end of the country)? Jericho. Much of the first season felt like a soap opera, but as it progressed and especially in the second season, the show moved away from that and matured into something really good. Sadly, it was canceled just as it picked up momentum. Its strengths include an interesting and plausible story about a terror attack on US soil, and the character Robert Hawkins. You don't know for sure where he stands for a good bit of the show's run. This would be a good show to bring back and modernize. The way it ended, it could be possible to bring back much of the original cast and continue the story a decade later.
Review of Jericho
