Grammar Girl: Quick and dirty tips for better writing Nice blog and podcast for grammar tips.
Geek!ed is group of tech folks from MI who meet once a week to talk about what cool thing are going on in their schools. These folks love to laugh!
Radiolab: (WNYC.org) One of the best story telling podcast I have ever listened too. From NPR this is often a science-oriented podcast that offers topics like Choices, Wright Bros etc.
Library of Congress: Brand new site I found that looks like it has tons of booktalks, interviews, and lectures...seems to have a podcast on music.
Book Lust with Nancy Pearl Can't make a list without books. This is our own action figure Nancy Pearl as she interviews famous authors and poets on her Seattle-based program.
Geek brief tv: video cast by Cali Lewis about new tech toys and stories.
Slashdot Review: Is a great review of current tech news from Slashdot, Digg and Reddit. Andy McCaskey does a great daily job of keep us current in this concise podcast.