Since you are interested in Der Rosenkavalier (Complete Opera), here is a list of other items that you may find interesting.
W. A. MOZART
The Mozart Album - All-new recordings of Mozart's most popular opera arias and duets
Anna Netrebko (soprano) Thomas Quasthoff, Bryn Terfel (baritones) Rene Pape (bass) / various orchestras and conductors
[ Deutsche Grammophon / CD - released 1/Aug/2006 ]
A celebratory vocal feast to honour one of the greatest musical geniuses of all time: that's the aim of this gala of international stars.
L'Italiana in Algeri (The Italian in Algers) (Complete Opera)
Agnes Balsa, Frank Lopardo, Vienna Philharmonic Orchestra. Abbado
[ Deutsche Grammophon / 2 CD - released 1/Jan/2002 ]
"Abbado's brilliant version was recorded in conjunction with a new staging by the Vienna State Opera, with timing and pointing all geared for wit on stage to make this the most captivating of all recordings of the opera." - Rosette (Highest Award)...
BELLINI / DONIZELLT / GOUNOD / PROKOFIEV / VERDI / etc
Live at the Metropolitan Opera
Anna Netrebko (soprano) / the Metropolitan Opera Orchestra & Chorus
[ Deutsche Grammophon / CD - released 29/Sep/2011 ]
"This compilation of highlights from Anna Netrebko's Metropolitan Opera roles makes a distinctive introduction to her talents." The Independent, 30th September 2011
W. A. MOZART
Le Nozze di Figaro [The Marriage of Figaro] (Complete opera)
Anna Netrebko, Christine Schafer, Bo Skovhus, Dorothea Raschmann / Wiener Philharmoniker, Nikolaus Harnoncourt
[ Deutsche Grammophon / 3 CD Box Set - released 20/Jul/2007 ]
'This Marriage of Figaro should go down in history as departing director Peter Ruzicka's greatest Salzburg achievement...four hours of perfection.'
Verdi: La Traviata (Complete opera)
Anna Netrebko / Rolando Villazon / Thomas Hampson / Wiener Philharmoniker / Carlo Rizzi
[ Deutsche Grammophon / 2 CD - released 13/Nov/2005 ]
"With talent and looks to burn, she has the world at her feet... she is such a singing actress, you thought mainly of Violetta, not of Anna Netrebko." (New York Sun)
BERLIOZ / BELLINI / DONIZETTI / DVORAK / GOUNOD / MOZART / PUCCINI
Anna Netrebko (soprano) / Vienna Philharmonic Orchestra, Gianandrea Noseda
[ Deutsche Grammophon First Choice / CD - released 15/Mar/2012 ]
"This solo recital, conducted by an old colleague from the Kirov, Gianandea Noseda, makes a fine portrait of a lovely singer." (Gramophone)