In my opinion a tiled header like that looks kinda hmm not very good..
Either you should a fixed width template so the header only shows once or blend the image into the background, so when the image ends a repeating pattern starts.
Well done Boris, nice work there. Nice choice of theme. I too have a Star Wars site, would you be interested in a link trade? If so send me a PM and we can exchange link details. My site is:
http://www.beyondstarwars.com