Lenovo IdeaCentre B540
The IdeaCentre B540 from Lenovo comes with a 23-in. ten-point multitouch HD screen which also supports 3D images using inexpensive passive glasses (like the ones you get in the local cinema). You can even watch TV on it without booting up the computer.
It comes with an Intel Core i3 or i5 processor, 8GB of RAM, a DVD or Blu-ray optical drive and a 1TB or 2TB hard drive. There is also Wi-Fi, Bluetooth, and a wireless keyboard and mouse.