The output of the obfuscated code seems to be good for about 45 places (at least on my box running Perl v5.8.3 built for i386-linux-thread-multi) before it differs from the reference values from the On-Line Encyclopedia of Integer Sequences.

If you want more precision, you might be interested in Unbounded Spigot Algorithms for the Digits of π by Jeremy Gibbons. It's a fun read, and you can adapt the methods presented in his paper to computing e digit by digit.

In reply to Good to about 45 places; spigot algorithm by tmoertel
in thread e with continued fractions by jdalbec

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