I just bought an Eclipse computer light that sits on top of my monitor. The thing simply rocks. I played Half-Life (bought them the same day) for 5 hours straight any zero eye strain. I normally gotta take a break from the computer after an hour. The thing rocks. I bought it on a whim really. I'd seen it a thinkgeek and kinda wanted one, but didn't like the idea of ordering it not knowing if I would like it and didn't want to deal with the hassle of returning. Saw it at Best Buy for $29.99 and that sucker was mine!
It's awesome!