[Wicher]

I use the Wikireader (from OpenMoko) when traveling: http://en.wikipedia.org/wiki/Wikireader I find it very useful, especially on the longer wall-socketless cycling trips.

You can stick both wikipedia and wiktionary on it. Quite possibly also Wikitravel, if they provide dumps.

[timdoug]

Wikitravel is available -- wget http://wrmlbeta.s3.amazonaws.com and you'll see all the dumps they have available, e.g.:

http://wrmlbeta.s3.amazonaws.com/entrav-20111105.7z.001

In the age of nearly unlimited connectivity, I still find my Wikireader an invaluable device when traveling.