There are many ways to enjoy a film. The best way is when everything in it is brilliantly executed and it's a great movie. That doesn't happen very often.
But it is also possible to enjoy individual aspects of a film: a particular performance, the photography, the art direction, the score, the special effects, and so on. When posters leave messages like the ones you cite, I think they're really saying, "This isn't a good movie but the visuals are enjoyable when I see them looking this good in my home." I think that's a perfectly legitimate reason to enjoy a film.
I happen to think "Van Helsing" is a piece of junk and an abject failure as a film, for instance. But I also think it has remarkable photography and production design and, if I bought an HD DVD player right now, I'd consider buying that disk just to admire the higher-quality presentation of those two elements.
This is hardly "artistic integrity be damned" or showing off for your friends. So, I utterly disagree with the tone and content of your post Mr. Ross.
But you're still one of my heroes because of the tribute to Jerry Goldsmith that you have in your signature. A wonderful tribute to an incredibly talented musician. (I hope you've heard his score to the "Soarin' Over California" attraction at Disney's California Adventure. One of his most wonderful creations, IMO.)
