Link-Sang has a great in-depth review of the Sony Talkman PSP posted on thier website.

For those unaware, the Talkman is a voice-activated translation application that allows you to interact in foreign languages with the help of your PSP. Along with pure translations, Talkman lets players play games to test their fluency of a language. The languages available are English, Japanese, Mandarin Chinese, Korean.

Check out their review here.