I've used Provigil a few times, mostly when there has been some fantastic deadline and I know I need to be working long hours and remain focused. For that, at

I've used Provigil a few times, mostly when there has been some fantastic deadline and I know I need to be working long hours and remain focused. For that, at least for me, it works wonders. I can work 16 hours and just be insanely productive, my ability to focus and work through problems at least feels way better. It could be all placebo, pretty impossible to judge that, but whatever causes it makes me write a lot of (generally good) code very quickly. That said, it scares me a bit, mostly because I worry about getting addicted psychologically to that focus. So I use it very rarely, basically only when absolutely necessary. Maybe two or three times a year. But a fun thing to experience for the geek in you.