It's just a hometheatre recliner (black, if you must know) with the legs replaced with the servos. It doesn't look like much.
EDIT: This isn't mine, and it doesn't look exactly the same... but it's pretty darn close.
I know the BTTF movies are compatible, but I didn't think the ride was. Where did you hear that?
Oh and it would be a lot cheaper just for you and the 005's's's''s'ss''''ss''s' wife to come visit us in Denver and we can watch a marathon. Now I just need more chairs. :( Too bad I'm broke from buying the first one.