There is a neat little gizmo over at Paste Magazine called Obamicon.me. You can use it to make your own Shepard Fairey / Obama style poster images. I decided to make a few of my own with a Star Wars theme.
I think the Vader image came out really well. He has his head tipped up at just the right visionary angle to the future where he can end this destructive conflict and rule the galaxy with his son.