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.
Dual-booting Windows and Linux the easy way (Linux.com videos)
Linux.com has some video tutorials on repartitioning a Windows machine. They utilize the excellent GParted LiveCD.
DSL 3.0 Video
OSVids.com has a new video of Damn Small Linux 3.0.
New OS Video Site
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.
RR64 Linux 3.0b1 XGL Video
lxnay dEsigN has posted a video of XGL running on KDE using a RR64 Linux 3.0b1 LiveDVD.
Gentoo RR4 Linux 2.65.1 Screencast
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.