McRib lovers...mark your calendars.  McDonald's will begin selling it's McRib Sandwich on November 2, 2010.  The McRib is one of those items that rolls around every so often and you either love it or hate it.  Kind of like the Shamrock Shake.  This time around...the McRib will only be available for 20 days.  I'm sure that is long enough to get your fix.