Just today I was checking out Santiago Calatrava's images of the Athens Olympic Stadium and the new WTC Transit Center when I ran into this annoying little piece of code.
document.oncontextmenu=new Function("return false")
What a complete bummer it is to see this clumsy little technique spread from crappy Geocities "art" sites to architechture firms and giants like Amazon.
UPDATE: Thanks to everyone who wrote in. I was using an older version of FireFox that didn't have the extra context menu protection, but I downloaded the new version and it works great! W00t!