Videos from the 24th CCC have been posted. I highly recommend Toying with Barcodes by FX. It is nice to think about the various ways technology around us can be extremely vulnerable to tampering, and barcodes are ripe. I’m sure this is old news to many tinkerers (hackers), but FX does an excellent job highlighting many issues.
Black Hat USA 2007 videos are also up.
Tunak Tunak Tun is an infectious music video. Some of the dance moves occur in WoW.