Questionable Firefox Extensions

I noticed there's already a FF extension thread, but I wanted to start one in a slightly different vein....

Are there any firefox extensions that let you do things you shouldn't?  Like one that would make saving images on a "don't right click" page easy, or one that allows easy capture of Macromedia Flash games or movies?  Hell, any that would let you do things web designers wouldn't want you doing?

IE I know has a plugin that allows easy capture of Flash files.  I would think FF would too.

>>6
Depends. I'll agree that 4chan is a website. But these flashy stupid sites with gay ass animated menus using tiny fixed fonts and more blinking crap than a Hong Kong street without any actual information are web sights designed by "how do I show web" people.