I bought an iPod Classic (80 GB) couple of weeks back and I am absolutely in love with it.
To start off, I am a big fan of Apple and its products. They are built with so much soul and character. The finesse and feel, ecstatic.
The 80 GB iPod classic (6th generation) is much thinner than the 30 GB iPod video (5th Generation) . The coverflow feature is stunning. Although its a bit slow ( as mentioned by others), its lovely to play around.
Music is fantastic. Most of them report that the quality of music has deteriorated in the new generation of iPod classic. I personally feel its as good as the older versions ( probably better). I would suggest you buy a better headphone - BOSE , Creative or Senheiser (Mine is on its way). The earphones are a bit disappointing.
One of th new features is the shuffle option right at the song. In the older iPod's one had to navigate back to the main menu to change the "Shuffle" option. Thats a good fix.
Videos look cool on the iPod Classic. The 200 DPI resolution is great. I have tons of videos ( mostly video podcasts) and I enjoy every moment watching them.
The greatest plugin is iTunes. Some complain that it is too clumsy to use iTunes. But I have a different view. Steve jobs had the view of popularizing the iTunes and believe me it's come out for good. The podcasts listed in the iTunes store are stunning.
