To say that The Sims 2: Seasons merely adds four different weather effects and switches between them at certain intervals would only be mostly accurate. It actually adds, as these expansions always seem to, a load of extra things vaguely related to the theme of seasons. This time it's gardening, and a special gardening club you can join and have rate your garden. It's actually kind-of nice, with some decent new content such as new careers and actions, and all our nasty cynicism was gently eroded by the mere act of growing and tending to a tomato plant.
As far as Sims expansions go though, it's mediocre. Come on, it's weather… And gardening. What's next? The Sims 2: Picking Your Ass? We can only hope.