I am a fan of talking and thinking about culture in TESOL classrooms, and I also think it is fun to dissect language, so this one has double the appeal. It's a great powerpoint that gets learners thinking about the implications of conceptualizing culture itself in different ways: an iceberg, onion, fishbowl, glasses, etc. Great for beginners, and could be used in a mixture of L1 and L2 if need be.