Did you know that the Music Library has hundreds of DVDs in various genres (not just opera!) that you can check out? All you have to do is take the call number to the circulation desk and ask for the item. Here is just a small sample:
DVD M5 C538 2002 Claudio Arrau: Schumann Piano Concerto, Schumann Carnaval, Beethoven Piano Sonata No. 32
DVD M1060 K378 2005 Herbert von Karajan and the Berlin Philharmonic: Mussorgsky Pictures at an Exhibition
DVD M1630.18 S736 2002 Keith Jarrett, Gary Peacock, Jack DeJohnette: Standards
DVD M1741.18 L439 2003 Led Zeppelin: Live at the Royal Albert Hall 1970
DVD M1812 K63 R4 Kodo (drummers) Live at the Acropolis
DVD PN1992.8 D6 J646 2002 John and Yoko's Year of Peace
To find these and more DVDs in the library catalog, set limits to "Film/Video" and do an author, title, or keyword search for what you want.