I just came here to laugh at the person who gave the movie a bad rating because "Airport announcements are nothing at all like that".
This is a rom-com, folks. It didn't break any new ground in its story. The two characters, all dialogue, has been done before and in some cases better (Before Sunrise ). The long lost lovers has been done before in some cases better (Before Sunset..lol) . The fantastical theme has been done before, sometimes better, and I won't name them all.
However, this was a good example of all of those, and if you didn't like it, I'd venture to say you are not a fan of those themes in general.
Duchovny did well, but Meg Ryan showed she still owns the rom-com genre. And to all the people who say they had no chemistry; I don't think you paid much attention. No, it was no Ryan/Hanks fare, but if you paid attention the whole point is that they were meant to act awkwardly towards each other for a lot of the movie. Once they finally broke down their walls and addressed their past mistakes and feeling, the characters grew closer and the chemistry came out. Even at the end, they were still unsure of themselves around each other and if there was any possible future.
This movie was fun, and I think both leads did a very good job of doing something difficult in carrying a movie where they were the only two characters, on the screen almost 1005 of the time, in a small setting.