Google Toolbar WordTranslator

Google Toolbar now supports word translation. Just select the language you wish for English words to be translated to in the toolbar options. Hover your mouse over the word you wish to be translated and the translation will pop up. It seems to be able to translate only individual words and only in Internet Explorer at the moment. However, it is still a very useful feature to look up meanings of a word while browsing.
Google Toolbar WordTranslator in action. Mouse is hovering the word knowledge and the translation for the word knowledge pops up instantly...