A nice, smooth flight, if you'll mind a little bumpiness.
To open up: I rather like this movie! It's not a deep masterpiece, but it's definitely entertaining, and does bring up some good points about heroes and superheroes, and has good characters, good effects, and many thrilling moments.
Of course, that's not to say it's perfect. It's a strange blending of space opera and traditional superheroics, which, to many, may make the film seem unbalanced. Personally, I find it to be an interesting mix, taking space-faring and Star Wars-y ideas and mashing them together with crazed supervillains, heroic reputations, secret identities and government intervention. I think it's worth a shot to be open minded about it, and it's not a real FAULT of the movie, but it can be counted as a potential detractor.
Reynolds does a rather good job of playing the part of reluctant superhero, actually bringing some genuine pathos to what could have been a bland, whiny character. Although some of his angst is slightly whiny, it works in the context of the movie, and makes his journey that much more believable. The supporting cast is also full of flair, Blake Lively as Carol Ferris, for instance, brings some energy and flair needed for an equally reluctant love interest, one who learns to truly love the hero as he becomes one. Peter Sarsgaard as Hector Hammond, the movie's main, physical antagonist (the creature called Parallax being the Big Bad
), creates a man who you could imagine toiling away for the rest of his life on needless things, one who you can believe would seize any power given to him, especially one powered by his own insecurities. Taika Waititi as Tom Kalmaku, Hal's best friend and 'sidekick', is pretty fun as well, giving us an entertaining 'dragged-along-for-the-ride' partner for Hal. Mark Strong's Sinestro is also very well acted, being both self-righteous, pompous, overly superior and, at the same time, heroic in his own way, making his inevitable descent to the dark-side proper and even a tiny bit sad.
The rest of the cast does a solid job, overall.
The special effects are also very, very well done, and provide some riveting action sequences.
All in all, if you can accept some idiosyncratic ideas and mostly just-solid performances and a little fat, Green Lantern is a underrated action-adventure you should check out.