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.

saving images on a "don't right click" page
LOL, Opera lets you do that (and FF too probably, if you disable Javascript). This is because the Opera devs care more about the user than nazi web developers.