I suck at golf, but I can at least contribute a different algorithm for 66 characters:
($p,$o,$n)=(1,3,-1);for(1..10**6){$p+=$n/$o;$o+=2;$n=-$n}print$p*4
Obviously, also note that 10**6 (instead of 1000000) is an easy way for the other posters here to save another 2 characters.
In reply to Re: Pi golf:
by jimt
in thread Pi golf:
by Robbjedi
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