LurkerFAQs ( 06.29.2011-09.11.2012 ),
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Last Post: 9:06:00pm, 03/02/2012
You can use this as a possible reference.
http://myanimelist.net/topanime.php
Most of the shows recommended so far are generally well-liked, but as far as I know there isn't really anything considered to be the single greatest.