It's workable, but uninspired. Part of the problem is how undistinguished the two main characters are -- after living the same lives over and over, they should be incredibly savvy and experienced individuals. They should know themselves inside and out. But they don't. In many ways, they know even less each time around.

If the writer had taken the premise further, this could have been an amazing book. But he doesn't even take it as far as Groundhog Day does.