Is there some reason why THX doesn't just release a DVD with the trailers on them? I found them all over the years in .VOB 5.1 and/or DTS format. The ones on their web site are crap. It's nice to put the THX trailer before a movie, especially when all your equipments has the THX logo on them. Even still, I have the THX laserdisc, and so far as I know there was no "upgrade" program for the WOW! DVD. Doesn't matter, I got one anyway .