DVDFab HD Decrypter will decrypt and rip your commercially made movies to the hard drive, so yes, you can copy them. It is still being updated for newer protection schemes.
DVDShrink will let you compress the movies to fit onto a blank, single layer dvd.
ImgBurn will do the actual burning to a blank disk.
Edit: Oops, a minute too late...but just reinforces Locoeng's message.