In September, 2009 and then again in February, 2010 I gave a lecture on Using Git. We video recorded it both times. The first ended up not turning out well as my computer could not transcode on the fly (from the webcam).
The second time around I was greatful for having Peter Hajas on hand to help record the video. The original source was 1080p. I've scaled it to 720p and posted it in vorbis/theora format.
Due to bandwidth limitations I'm only serving this via torrent. Without further ado, here is Using Git (torrent).