Yup emumovies.com ... it seems like a lot up front, but a platinum membership really is worth it simply for the FTP access or using HyperSync to automatically download the videos for you. I was really hesitant to shell out cash for lifetime memberships to both emumovies and hypersync, but I can honestly say that I don't regret getting either for a second. The other cool thing is with Hypersync it will automatically download all of the themes available for every system you have set up, which really makes it fun to browse through games and systems.
I'm actually in the process of creating themes for the entire ScummVM collection... hoping to be done and uploaded to Hyperbase in the next few months!