Very fun, even funny, but...

Rating: 7/10 (16 August 2014)

First of all, don't mistake me, yes, Guardians is a very fun movie to see, even funny at times, BUT, and for it's a big one, you can't really like it if you know too much about the comics involved (ie, GotG, of course, but also anything involving Ronan the Accuser and the Nova Corps).
If you don't take the comics into account, this movie is everything a summer refreshing movie should be: fun, action-packed, funny characters, great show on all accounts. The characters are all likable, and don't go too close on the limit of the suspension of disbelief.
Chris Pratt does an excellent job with Star-Lord, even though this incarnation mainly seems out of the Annihilation War comics period, rather than the latest incarnation of GotG the movie seems mainly based on.
Similarly, Rocket Racoon is very good, and very close to the comics.
The other characters, though, differ quite notably from the comics. Gamora poses as a traumatized victim of Thanos, who never wanted to kill all these people: not exactly the sadistic "Most dangerous woman in the universe". Drax the Destroyer is a muscular moron out for revenge against Ronan, there again, quite far from a mutated human designed solely for the purpose of killing Thanos. Groot is just a feeble-minded sidekick to Rocket, there again quite far from what he is in the comics.
As for the villains, they're quite ridiculous too. Ronan is just a single-minded bully out for genocide, and the Collector is just a shadowy dealer in rare goods. Only Thanos is treated correctly, as a monster so powerful nobody in his right mind would dare provoke him.
But the worst of all is still the Nova Corps... I mean, they're just a bunch of nobodies, without powers, and fancy little fighters... How are we to believe they're the cops of space, universally respected and feared? Overall, it's a good movie, fun for the summer, but quite out of place for a Marvel piece, as far as tone is concerned. As for the content, it points more and more towards an Avengers 3 movie with Thanos and the Infinity Gauntlet or something close.
And the fun allusion of the movie: the inclusion of Cosmo in the Collector's collection, and the surprise in the post-credits scene (not alluding to any further movie, for once).