I would certainly never suggest using this for anything other than discs you already own, but a program called DVDShrink will let you rip a DVD to your computer's hard drive and get rid of all of those pesky little things like region coding, FBI warnings, locked out menus, etc.
I use this to put together DVDs with trailers, cartoons, etc., for "old fashioned movie night" at home.
I want to do something along those lines, I want to take the trailers of all the discs I have (trailers for movies I own, not just "any" trailers) and put them together on one disc. Makes it easy to ask someone, what do you want to watch, "here, decide".