Pic translator, translate what you read (say a menu in a restaurant abroad). Shoot a text, send, get the translation back.

What would be cool, is to take a pic of an object and get the translation (not just text). 

Jibbigo translate what you say (in English-Spanish for now). Say something in english, send, get the voice translation back.

The only problem i see with those kind of translation apps is the cost: no so much the cost of the apps (Jibbigo is not cheap btw) but the cost of usage. Both need to forward a file to the web and send back to you something translated (text or voice). Most of the time you need those apps abroad where roaming fees can kill your bank account (eg: 30 dollars for a few mBs)

So, you need to be extra careful when using them.