I have to say this is a most impressive work. Easily the best, most imaginative use of the templates concept I have yet seen in a d20 book.

I have to say I am not the biggest fan of templates. With the ability to add class levels to monsters, it seems a little silly. And when added to player characters, templates are usually unbalancing.

However, the templates in BaS were really good. Want a way to turn a car into something out of "Cristine"? Now you can. Want to turn an Energy Projector into "Storm"... now you can.

Quite simply, this is a gorgeous, well written, brilliantly conceived work.