Regular expressions screencast
A screencast or series about using regular expressions to match patterns. Originally suggested by Pete Forde.
NetTuts already covered this topic and it helped allot. I believe the Video quality could become way better if PeepCode covers this topic too but I will not guess if PeepCode can lift the content quality too.
I think this could be interesting if it covered some of the theory of computation aspects of regex's, such as state machines, computational limitations of regular expressions, etc. However, I don't think we've seen a peepcode that's really focused on the academic principals of something as opposed to just how to use them. Without it, though, I'd see it being really dry and short.