I think it really comes down to personal preference. I agree somewhat with Rikter - adding a barcode kind of makes it look like you're trying too hard or that you're trying to fool someone. A barcode is only on retail DVDs in the first place because it HAS to be. If you're creating one yourself, why bother with it? The same goes for fine print/legal mumbo jumbo. I don't really think a barcode makes a cover look any more professional, but to each his own I guess...

I decided to take a different approach for my MST3K discs. With over 200 episodes, burning a CDR and printing a label for each one is pretty time consuming and expensive. Instead, I'm burning them to DVD which can hold up to 6 per disc. I should have gone this direction in the first place before I burned the first 50 episodes. Oh well, at least I didn't print all the labels...

http://img148.imageshack.us/img148/2761/00k13ns.jpg