This is pretty cool. I love the video as well, especially the Ron Gilbert bit!
I love the atmosphere in Double Fine games though the gameplay doesn't always appeal to me (though I've only played Psychonauts so I'm talking out of my arse, maybe). Also Telltale do some good stuff but often their games lack the magic spark that I think Double Fine has. I think their adventure game will be closer to Classic LucasArts than what Telltale produce now. I might be wrong, but it will be interesting to see!