Since I can't control the contents of the video bar from YouTube in the left column, I'm posting my favorite video here as well.
It's an Ikebana demonstration at the Shambhala Meditation Center in Boulder, Colorado. 48 minutes long, so sit back, relax and enjoy as Alexandra Shenpen explains how they work with ikebana as a way of meditation.
I especially like the focus on balancing heaven and earth, or the visionary and the down to earth principle in life. It's fascinating to see how Shenpen is working with this in her ikebana arrangement. Another interesting thing is the way she's talking about mans place in between heaven and earth from an ecological perspective.