Here are my nominees.
Waltraud Meier, Brilliant Klytemnestra and anything else really!
Joyce Didonato, Always puts her character over well, always believable
Mara Zampieri (really Liked her Tosca ROH '86 when she stood in for Natalia Troitskaya)
Catherine Malfitano just for pure effort. A real trooper!
Elena Obraztsova, probs not a popular choice but she scared the pants off me as Azucena, broke my heart as Santuzza.
Sir Thomas Allan, Yep local lad,
Gobbi oh yep...Scarpia... eek!
Ramon Vargas, such a cutie who would know!. Had me in tears in the Met's Boheme.