This is from 2006 (thus Meryl Streep's reference to the "Wonder Woman" series that never happened). But it's worth replaying, because this answers the oft-asked question, "Why do you love Joss Whedon?"
Joss' actual speech (short, to the point, and brilliant) starts at about the 2 minute mark. It's about him dealing with "press junkets," in which reporters ask the same questions over and over and over and over and over. In particular, they ask one question: "Why do always write these strong women characters?" There has never been -- nor is there ever likely to be -- a better set of answers. https://www.youtube.com/watch?v=cYaczoJMRhs <https://www.youtube.com/watch?v=cYaczoJMRhs>