I was going to recommend http://badassjs.com/ as well. I notice someone in the comments there beat me to it but.. I'm giving the rec on HN ;-) (and I wouldn't be doing my job if I didn't recommend new O'Reilly JavaScript conference taking place later this year: http://fluentconf.com/ :-))
I use the MDN (#4 on the list) a lot. I only wish there was (or, I only wish I knew the name of...) a support-matrix site for javascript like there is for css (quirksmode.org). Some topics in MDN have that info, but not all (and when it does that info is very broad).
I'll definitely have to add this one to the next roundup. I wasn't aware of this one and it really looks like a valuable resource. I love sites like this that point out tips and tricks.
JavaScript Jabber has managed to get some very interesting guests, but the host is not at all experienced with JavaScript, which is pretty annoying. The JavaScript Show is better in that regard.
Understood but Chuck admits it. His guests have been top-notch and they have gone into some nice depth so I don't think it matters all that much. I expect interviews and discussions will get stronger.