I saw Lantern on Saturday. I've always liked the Green Lantern since I was a kid but I've never been super-familiar with it like I was with Spider-man or Batman.
Again I'd say it was a mid-grade comic book movie. Good visuals, but it was a tad slow. I'd have liked to see more of Hal being a Lantern on Earth, and of course it could have used a lot more Sinestro (or Mark Strong, for that matter). Also, the reviewer made a mistake - Sinestro was hardly forgettable. He was awesome, because he was played by the talented Mark Strong. I couldn't wait to see more of him and that last bit with him and the Yellow Power Ring was awesome.
It wasn't as well done as something like Dark Knight or Spider-man 2, but it also wasn't horribly done like Spider-man 3 or Fantastic Four. I got my $10 at the theater. I won't see it at the theater again, but I'll likely purchase the BluRay when it's released.
Come on Captain America.
BTW I'm not really a Marvel fanboy. I do 'prefer' Marvel comics to DC, but when it comes to the heavy hitters like Superman, Batman, (and pretty much the entire Top Tier Justice League members) I WAYYY prefer DC. The Avengers WISH they could be as cool as the JLA.