As many people have said,
Robert Scoble,
Jeff Jarvis,
Steve Rubel ,
Andy Lark,
Stuart Bruce,
Shel Holtz,
Tom Murphy, to name a few - Dell have launched a blog,
One2One.
Some of this has been positive some negative but it looks like it might be a rocky road for Dell to begin with. Good luck to them.
Having just made the step to set up a blog it can be daunting and difficult to begin with even more so with the eyes and keyboards of the blogosphere on you. While writing every post I think what if this is the wrong thing to say, the wrong way to link, has a typo in, etc but you can't let that stop you and Dell haven't. I'm sure they considered what might happen' worst case' before doing this but thought it a step in the right direction so made that step.
Yes the videos may be trying to replicate Channel 9 and most of the content about their products it's going to take a while to sort out their own voice and style, they have however joined the conversation and that is what it should be - a two way dialogue or conversation, where they're able to listen and learn from it just as we all try to do.
Update - Dell is a client, forgot to add that earlier.