From Wikipedia -- http://en.wikipedia.org/wiki/So_Long,_and_Thanks_for_All_the_Fish

So Long, and Thanks for All the Fish is the fourth book of the Hitchhiker's Guide to the Galaxy "series" written by Douglas Adams. Its title is the message left by the dolphins when they departed Planet Earth just before it was demolished to make way for a hyperspace bypass, as described in The Hitchhiker's Guide to the Galaxy. The phrase has since been adopted by some science fiction fans as a humorous way to say "goodbye" and a song of the same name was featured in the 2005 film adaptation of The Hitchhiker's Guide to the Galaxy.

Jeff

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: Yeah, I saw where he called Eddie out with a "what rules,
: Eddie?" when Eddie had said y'all broke the rules. He went
: on to say he wanted no part of such a forum, self-exiled, and
: closed with "...and thanks for the fish". I believe
: that last line was in Hitchhiker's guide to the universe, can't
: recall for sure, but it makes an interesting final statement of
: good bye. That statement is now gone.