to me cookie cutter is the 600x400 designs with heavy graphics or the stretched version of it.
and what tia said

in addition to the same old ounique images and plug-ins some sponsors tout as our "new" sites. where there's nothin' new about them but the name. and don't even get me started on sucky members areas and only 1 or 2 galleries covering the niche the site officially advertises and the rest being just filler plugin galleries