It's not making as many megabucks as before, but it comes and goes, and always has since TV came along.
This movie won't "save" Hollywood anymore than the last movie to "Save Hollywood" did, be it Star Wars, King Kong, The Passion, etc. etc.
I won't see this movie because Superman, simply put, is boring; the movies I saw about him were boring, Superman 1 being one of the great schizo movies ever: epic and beautiful up to the point where Reeves shows up, then dominated by boring TV show characters and a silly villain. Also, it's directed by Bryan Singer, whose X-Men movies are among the most overrated genre exercises in years.
I'm looking forward to Mission Impossible 3, which I've heard from people who've seen it has a good story and characters; The Fountain, because it is genuinely weird; and X-Men 3, because I read the comics as a kid and need SOMEthing big and epic-looking.
The problem with Hollywood is not with the direction or acting, which are both fine generally, or with the craftsmen and women, who are at their most polished. It's with the producers, who are back in the driver's seat with more power than ever, their roles more like those of television producers rather than just financial officers; the writers, who go along with the dictates of these people because they get paid buckets of cash to write crap and that's what they deliver, polished crap with snappy comebacks and little character interest; and yes, the audience, which keeps this crap at the top of the box office.
I get bored with people bitching about Hollywood because if we didn't pay to see this stuff, they wouldn't make it.
This projects out to 10 billion in annual sales. That really is pretty bad.
I'm going to go see M:I3 because I love Lost and like what I've seen of Alias. Don't particularly care for Tom Cruise, and I never saw the first two, but that's okay. It looks good, and the word-of-mouth is pretty strong.