I've seen Van Bebber's feature length, Deadbeat at Dawn, and his short film, Roadkill: The Last Days of John Martin, and enjoyed them both. I've never seen any of his other flicks though. I think Anchor Bay UK released The Manson Family on DVD some years back - it was one of those titles I never bothered to pick up. I'd buy 'Deadbeat' and 'Roadkill' if someone like Arrow or 88 Films released them.
