Every WEB developer should know...
K. Scott Allen (OdeToCode), Kevin Dente, Scott Koon (Lazycoder) and Jon Galloway record a weekly podcast where they discuss various development issues, technologies, etc.
In November 2008 they had a show about what web developers need to know:
Episode 27: What Every Web Developer Needs To Know
If you are a web developer I'd recommend you have a listen. And not just because of the title of the episode.