There are many people in the world who are interested in the calculation of pi. I have found a rank list of people who can memorized digits of pi. All of them are heroes and the greatest one is Hiroyuki Goto. He can remember 42195 digits of pi which is equal to the marathon distance in meter (strange?!).
The complete ranking list yoou can find here.
If you are interested in man digits for your computational purpose you can download
one million digits
or
up to 50 billion digits.
At the moment and if I remember right for some years Yasumasa Kanada calculates the most digits:
1.241.100.000.000 digits.