That's the Netbook and Nettop range. Being as music and movies aren't important, buy one of these. You can save even more money by opting to by one with Linux instead of Windows. Linux is free, there are hardly any viruses that exist for it, and it's supported 24/7 by free-lance programmers around the world, I highly recommend it.
CNET
Just Google Netbook or Nettop. I've heard good things about the HP Mini and the ones who started it all, ASUS and their Eee. Other than the price, the main advantage is low power consumption, so a Netbook battery can last up to 8 hours.