Over at Legends of Localization, there is an amazing article (potentially series of articles) discussing localization by comparing, line for line, multiple translations of the same game (in this case, Final Fantasy VI). It uses the official SNES translation, the GBA translation, one of the more popular fan translations, and if you just tossed the original Japanese into Google Translate.
Well worth the time to read if you’ve ever been curious about the localization and translation process.