Has anyone else seen John Siracusa's Lion review? It's pretty impressive - something for everyone from novice to power user. Though I admit I skipped a few pages around the 7-9 mark that were a little over my head 
http://arstechnica.com/apple/reviews/2011/07/mac-os-x-10-7.ars
http://arstechnica.com/apple/reviews/2011/07/mac-os-x-10-7.ars