I'm lucky to have my office desk next to a window, so I get some decent natural light during the day, but when I want to work into the evening I find that my current GE "Reveal" full-spectrum 60-watt lamp isn't quote enough.
What do folks here do to get good lighting when the Sun isn't around?
http://www.ikea.com/us/en/catalog/products/40141079
It sits directly behind my monitor and lights up the room so that I am not blinded by my monitor. It isn't enough to read by, though, so if I need to do that I use a regular desk lamp. But for computing, this sort of setup is ideal (IMHO anyway).