You might remember the Openmoko WikiReader from awhile back. The device holds over 3 million Wikipedia entries. Well, now it has just received an update to include 15 more languages.
The $99 international version comes with 8GB of internal memory, while the 4GB model comes in just English for $30 less. This is a pretty specialized gadget that might come in handy for info-junkies and few others. Most people already have a device that can access Wikipedia.