-snip-
On February 12, the CBS Evening News promoted a conspiracy theory floated by retired National Guard officer Bill Burkett, who claimed he overheard a 1997 order to purge Bushs records. The Boston Globe reported the next day that Burketts back-up, George Conn, totally disagreed with his friends version of what happened, but the Evening News never told viewers about that crucial detail.
http://www.mrc.org/realitycheck/2004/fax20040217.asp
This whole memogate thing is just a tiny tip of a huge iceberg - but it's beginning to shrink.