CS3 Box Shadow has been a really good addition to CSS effect. I remember last time before CSS3 was introduced, it's a pain to convert design with shadow into proper HTML and CSS. You will need to slice the corners of the shadow..... I don't want to go back there again.
Previously I have mentioned a plugin called Real shadow, it's a jQuery plugin that casts photorealistic shadows. This time, we have another plugin that does something similar, it's called - shine.js