I'd have to be honest and say I've not come across a full screen site for a while now They are annoying, no matter how good the site actually is, I almost always close 'em down as they hog all my PC resources and to be honest, many designers don't seem to have taken into account all the extra page space that removing the bars and buttons etc creates so the designs could still fit into a normal browser window anyway.

I have noticed a lot more sites at least offering the option of launching full screen or browsing in a normal window which is much better!