I have a 8gb iPod Touch and this case which I bought at Carphone Warehouse (and paid £25 for!!!).
So, since no-one has shared their thoughts yet, I figured i'd help you out.
The case looks good - it is made from a thick black leather with cream/white stitching around the sides. The bottom dips down so the Menu button can be reached, and has a gap at the top and bottom to fit the USB wire in, and the headphones, and a space at the top for the power/ standby button.
You also get a thin plastic screen cover that protects the iPod from being scratched on the glass front, however, put this on carefully, because mine is slightly wonky, and I haven't figured out how to, or even if I can remove it.
My only problem with the case is the fact that because it covers the back, it also covers the light sensor, which means that the Auto-brightness feature is unable to work, but this can be changed in the iPod Settings, by setting it at an unchanging level.
Overall, the case is a good, smart-looking protector for the iPod Touch.
4*