Often I look at real life 'effects' and compare them to effects in games.
When I was boating on a lake the other day, I couldn't help thinking 'You could never do that kind of effect with bump mapping, but with enough polygons, a capable physics engine and specular lighting it would get very close. In games the water is often much too transparent, real life you can hardly see anythin bleow because of the small waves and relfections.'
When I was driving a car at night on the town, I was thinking 'Those headlights do not project a defined light cone as in some games, there is so much diffused lighting in town that the headlights are more just a 'star shaped lens flare' kind of effect like in GT3.
And when it started raining, and the raindrops started making those little streams across the car windows I thought how much better the effect looks in Silent Hill 3
.
That scene is btw one of my favorite scenes in any game (ICO's ending (before the 'beach ending') being the other contender for no.1 spot), it is so moody and beautiful and sad. I've always loved the feeling when you're driving a car at night on an empty road, then it starts to rain a little and the only sounds you hear are the engine and the sound of windscreen wipers, there's something soothing and hypnotic in it...
Joni Mitchell's 'Night Ride Home' sums it up athmospherically quite nicely, (although it is not raining in that song.)