Since you are interested in Placido Domingo: The Verdi Tenor, here is a list of other items that you may find interesting.
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