I love stage performances with large scale ikebana arrangements. It's not often that I get to see any live performances, but watching them online is fun as well. This video is from the stage performance at Ichiyo Hana Festa 2011. Akihiro Kasuya, headmaster of the Ichiyo School creates a magical landscape of ikebana arrangements.
One of my Flickr friends received his instructor certificate from the Ichiyo School earlier this year. If you're interested in seeing more Ichiyo ikebana I recommend his photo stream on Flickr. I especially like his arrangements without kenzan.