Kyle Rankin, author of Knoppix Hacks, has a Google Tech Talk presentation video detailing tricks for customizing Knoppix without going through the lengthy remastering process.
Linux.com has some video tutorials on repartitioning a Windows machine. They utilize the excellent GParted LiveCD.
OSVids.com has a new video of Damn Small Linux 3.0.
OSVids.com is a new site dedicated to hosting videos of various operating systems. It already has videos of several popular Linux LiveCD distributions, including Elive.
lxnay dEsigN has posted a video of XGL running on KDE using a RR64 Linux 3.0b1 LiveDVD.
LinClips.com added a flash screencast of RR4 2.65.1. While the RR4 ISO comes as a LiveDVD, the desktop of this screencast looks different than the default boot, leading me to believe they either changed desktop settings, or installed it for the screencast.