I saw this on College Humor a week or so ago. It's Taichi Saotome's Special New Year Performance from Dragon and Peony, called "Sword Dance and Shadowgraph". The choreography's quite beautiful.
Reviews of Science Fiction and Fantasy novels by Jessica Strider, a former bookseller and avid reader. You'll also find shout-outs to SFF books, news tidbits, historical tidbits and more.