Check out The Missing Link flash creation by interactive media artist Masayuki Kido. This is really cool. I don’t really have the words to summarize other than to say, it’s a series of silhouettes that appear and with the click of the mouse you can interact with them to see a near narrative unfold itself dynamically. I found it extremely compelling.
You might also want to check out Pictaps, another flash based diversion, on the same site, that allows you to draw a character, and then watch him dance to a silly song.