Say What?! (Cinematic Gold)

We want to hear from YOU, the intrepid PK reader!
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We all know that Hollywood is currently having a torrid love affair with comic book movies. Some are are high-profile blockbusters (Iron Man, The Dark Knight) while others are under the radar and often not known to be comic book films (A History of Violence, Road to Perdition). Aside from the fact that most e enjoy a work of art crossing mediums, of what value do these interpretations have?
Do they actively increase sales in the monthly superhero pamphlets or the bookstore graphic novels? Sales records don't seem to bear this out. Do they raise the estimation of the craft? Most comic book movie are mindless action vehicles or the movie-going public is unaware they're based on a comic, so I don't think that's a major faction.
So my question to you all this week is this:
Are comic book/graphic novel adaptations good for the industry or are they just a way to make money in a different venue and don't affect the books positively or negatively?






Mmmm, I'll need some time to think about this, but my initial reaction is that it doesn't necessarily hurt anything. Its just that only what seems profitable will even get a chance getting made into a movie. But that's every movie really.