A potentially time-limited treat for fans of mezzo-sopranos Vesselina Kasarova and Marijana Mijanovic. This video clip of snippets from the Zurich Opera's 2009 production (David Pountney production) of Handel's Agrippina with interviews with a few principal singers is available at the Opernhaus's OpernTV page.
I suspect that it won't stay on the OpernTV page for more than a few months (will likely get knocked off once the clips from this season are put up), though.
Edited 1 April 2010: Cheers to Opernhaus Zurich! They had gone and post this clip on their Youtube channel, so here it is!
Click here to visit the Zurich Opera's Youtube Channel.