Stumbled on this really wonderful video of paintings of women - all morphing together into each other. Someone really took some time to do this, they did a beautiful job and it works really well.
Sit back at least a few feet from your screen when you watch it, helps with the overall progressions. Grab a drink, kick back for a few minutes and enjoy.
Link:
http://www.youtube.com/watch?v=bcmQpROaUEo