Software Transporting Drive
Sandisk introduced recently a new type of flashdrives which allow you to place, with a special program, any software you currently have installed in your PC and move it to any other Windows computer you wish. They are calling it U3 drives and the model itself is Cruzer Micro.
I don’t know how Sandisk will restrict the use of the same software on other flashdrives, but the concept is interesting enough. Sadly though, you can’t carry your World of Warcraft folder around yet, it seems that the biggest unit size is 2GB (or at least that’s the biggest size on the available pictures).