I've got the O-OT on dvd too, from ebay somebody finally made a reasonably-priced quality copy from the Laserdiscs and I nabbed a copy before Ebay shut him down. They appear all the time.
Only thing I wish it had was the original "Close the blast doors" line, which was in the theater copies, cut from the vhs set for years, then added back in for some of the official SEs and DVDs! Now if somebody could cut & paste that bit into a good copy, I'd be sold!