I love the sound of the rain. It is quite soothing. I love it even more when it is a thunderstorm and you're able to get those sounds of thunder in there as well. I get as giddy as a school girl when I start hearing thunder, but it usually doesn't last too long here in Wisconsin.
I have mentioned in my weather-related thread that I love rain; when it rains I open my window to hear its mysterious and hypnotizing falling, and sometimes go outside in my garden - I'd rather it rain than be boiling hot.
Rain is good this time of year in my country. No chance for me to get sweaty, I get to wear my custom waterproof leather jacket to work, and drinking hot coffee/chocolate/tea feels much more better during these rainy days.
Rain actually changes the chemical structure of the atmosphere. It changes oxygen into ozone which has a sweet smell but, is actually noxious. If you stand around a big copying machine or a heavy duty transformer you might have the same affect.