i had actually moved on to listening to a series of judith butler lectures when i saw this in related videos. Zizek on vegetarians:
http://www.youtube.com/watch?v=_TqyKsnQD38&feature=related
earlier, I listened to the Spivak lectures.
http://www.youtube.com/watch?v=2ZHH4ALRFHw
the questions cracked me up. a couple of the people just ignored everything she said and proceeded merrily along adhering to readings of her work that she rejected in the lecture. heh.