Was looking for something fairly foolproof and inexpensive and found this, quite new and apparently not referenced on the forum yet -
http://www.bruji.com/dvdpedia/
Developers responded very quickly to some queries I had and it seems to be coming along very nicely. iTunes type interface, pulls info in from Amazon USA, UK or Germany. I have no affiliation at all. It costs under ten quid ($14) which seemed fair enough to me - I've bought it.