Unless they've changed the rules when I wasn't looking, as long as you list them in the correct category, you can list any legal adult item. You have to list them in the "Mature Audiences" category though, which is behind password protection. You have to enter your eBay un/pw to view the auctions.
When browsing the categories (
http://pages.ebay.com/buy/index.html) the path is:
Everything Else > Mature Audiences
The full path for listing items is:
Home > All Categories > Everything Else > Mature Audiences
Then there are subcategories like "DVDs".
Hope this helps.