I am happy to see the detailed video review of Nokia's Tube (5800 XpressMusic) in Engadget.
Like everyone, i have been a loyal Nokia fan for years and off late, my skepticism on Nokia's smartphones was also clarified after I bought a Nokia E61. My E61 has been the best phone ever I had got till date. And Symbian s60 is the best OS ever.
Looking at the videos, I am sure Nokia's Tube will be a huge success, if not for touchscreen, but at least for the features packed in it and for usability sake.
You may refer to this link to read through the specifications of this phone.