Remove table-hover effect for a single cell in a Twitter Bootstrap table

This is what the bootstrap CSS looks like:

.table-hover { 
             tbody { tr:hover td, tr:hover th 
                             { background-color: @tableBackgroundHover; } 
                        }
           }

With a bit of JQuery:

  $('td[rowspan]').addClass('hasRowSpan');

You can then use the following CSS to override it:

tbody tr:hover td.hasRowSpan { 
          background-color: none;   /* or whatever color you want */
}