Documentary of mathematics. 
Possible Duplicate:
List of Interesting Math Videos/ Documentaries 

I just watched a documentary of Fermat's last theorem. It is so good. I can feel how mathematician think and get excited. 
It motivates me to study more and eventually try to solve a good problem.
Is there other mathematics documentary like this? Could you suggest one with URL? I prefer Youtube or other free sites.
 A: BBC's The Story of Maths is a four part series outlining various aspects of the history of math.
See this wikipedia page for a synopsis.
A: The Code, by Marcus du Sautoy.
This is a nice, 3 part documentary about how mathematics can be used to describe the world around us. It's not particularly historical, but I'm sure you'll enjoy it; there's a lot of interesting examples in there that I hadn't seen before. 
You can find the 3 parts on youtube (though I'm not 110% sure of the legality of this...), just search for something like 'The code Marcus du Sautoy'.
A: You can search on the webpage of Zala film :
http://zalafilms.com/index.html, there are many mathematical films for example, the documentary about Paul Hamos : "I want to be a mathematician", Julian Robinson and the 10th problem of Hilbert, A Beautiful Mind(film about John Nash).....
There are more documentaries by BBC, however they are about physics, you can browse the webpage of BBC Horizons. They are also very interesting.
A: On this site you can find various mathematics documentaries (mostly BBC production)
