A faster way to calculate sine function?

I remember reading an interesting article about some guy who made up a new algorithm for calculating approximate values of the sine function, which I found out to be at least 30%-40% faster than the one used in math.h. Unfortunately I lost the code where I used this algorithm and now that I've spent several hours searching for it over the 'net, it feels like it just vanished somewhere...

So... does anyone happen to know what am I talking about or has a link to that article? I'm sure I'm not the only one who has read it, and I'd really appreciate it if anyone could either give me a link to that page or the algorithm itself :)