The videos at http://videolectures.net/ http://videolectures.net/ often pick out a momentary dramatic gesture for the thumbnail image. Out of context, they some

The videos at http://videolectures.net/ http://videolectures.net/ often pick out a momentary dramatic gesture for the thumbnail image. Out of context, they sometimes seem pretty extreme. I pulled out a selection here: http://homepages.inf.ed.ac.uk/imurray2/tmp/vl_gestures.html http://homepages.inf.ed.ac.uk/imurray2/tmp/vl_gestures.html (I'm the last one, I believe gesturing about orthogonal vectors during an intro to machine learning.)