Extracting distinct e-mails from a large text file

Submitted by geekwisdom on Fri, 2008-09-05 13:51.
perl -wne'while(/[\w\.\-]+@[\w\.\-]+\w+/g){print "$&\n"}' BigFileContainingEmails.txt | sort -u > output.txt
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Submitted by hahaha on Sun, 2008-12-28 14:59.
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