Best Cooking DVDs/Podcasts? Julia? Alton? etc.

Hi Chowhounds,

I'm in search of your favorite cooking DVD's. In particular I'm looking for DVD's or podcasts that will provide techniques rather than recipes and that I can use regularly to teach myself some new tricks in the ktichen.

Amazon is selling Julia Child's "French Chef" collection. I think that Alton Brown also has a few DVD's out, and I really enjoy his Food Network show. I'm not a big fan of America's Test kitchen, but love the PBS "Chef's Afield" show. Any ideas for DVD's I should add to my currently empty collection?

Thanks!