This is a 10 minute excerpt from a lecture given by David Crystal, world renowned expert on world Englishes.  In the video, he explains what happens when languages come into contact (e.g. through empire-building, migration, commerce and globalization). He describes how, just as English has taken words from other languages and made them its own, other languages have incorporated English words into their lexicons while maintaining their own grammatical integrity.  This is a useful orientation for teachers who want to understand the origins of pidgins, creoles and varieties of English, and/or the reflexive relationship between language and culture.