Since you are interested in Placido Domingo: The Verdi Tenor, here is a list of other items that you may find interesting.
Anner Bylsma plays Boccherini [5 CD set]
Anner Bylsma (cello) with various accompaniments
[ Sony Classical Masters / 5 CD Box Set - released 10/Apr/2012 ]
"Anner Bylsma is a tremendous enthusiast, whose high spirits and nervous energy never fail to manifest themselves in his performances." (Gramophone)
Leonard Bernstein conducts Bernstein [7 CD set]
John Bogart (alto) Zino Francescatti (violin) Benny Goodman (clarinet) / New York Philharmonic, Leonard Bernstein
[ Sony Classical Masters / 7 CD Box Set - released 1/Sep/2011 ]
Leonard Bernstein was perhaps the most influential figure in classical music in the last half of the twentieth century. Composer, conductor, author, lecturer and often controversial media personality, the American-born Bernstein had a dramatic impact...
Messiah (highlights recorded in 1967)
Judith Raskin, Florence Kopleff, Richard Lewis, Thomas Paul / Robert Shaw Chorale & Orchestra, Robert Shaw
[ Sony Classical Masters / CD - released 10/Dec/2011 ]
Robert Shaw Chorale, Robert Shaw