This Italian Johnny Depp site shares an Italian magazine article about Thomas McDonell:
DEPPendents DEPPendents Italia
Dark Shadows.CIOé.Magazine
http://johnnydepp.forumcommunity.net/?t=475012411 hour ago
(Click on "SPOILER (clicca per visualizzare)")
If you read Italian, it might be interesting.
And in this Alice Cooper mentions doing DS:
Alice Cooper Returns with a New "Nightmare"255 days 6 hours 59 minutes 28 seconds until the day the Depp/Burton Dark Shadows is released(ET)!!