I suffer from pretty bad insomnia sometimes (the kind where you're exhausted but your mind will not stop racing) and I'm convinced it's due to sitting in front of a bright computer monitor all evening. Last night was the freaking limit, I had a busy day lined up today and I had to do it on approx 30 mins sleep. So tonight I have found this app, F.lux, which automatically dims and warms the colors on your screen according to what time it is and when the sun set. What with this and the ginormous bunch of bananas I'm about to eat, I think I'm going to sleep like a baby tonight
http://justgetflux.com/