The content is not protected so Nero etc. works fine.
Cnet notes the alternatives at http://reviews.cnet.com/4520-6603_7-5141963-1.html
Because such can be abused I offer no more than the article.
Who knows about a very good DVD burner software in order to copy DVD movies to Hard Drive (with special features: Subtitles), DVD to DVD, Dual Layer DVDs.
I know there are a lot of software in the market but I would like to know wich one is the better.