I have one piece of advice for reviewers:

Rating: 9/10 (10 May 2012)

GO SEE THIS MOVIE!!!!! Like, right now. Just drop everything, and go see this movie!!! It is 100% worth it.
When Loki, the god of mischief who we saw in "Thor,"played by Tom Hiddleston, threatens the safety of the world, SHIELD director Nick Fury, played by Samuel L. Jackson, brings together a team of superheroes, most of which come from the last few Marvel superheroes movies: Iron Man, played brilliantly once again by Robert Downey Jr., Captain America, played by Chris Evans, The Incredible Hulk, played by Mark Ruffalo (taking over for Edward Norton), Thor, played by Chris Hemsworth, Black Widow, played by the beautiful Scarlett Johansson, and Hawkeye, played by Jeremy Renner. Together, they must stop Loki from initiating his plan.
Let me just say this as my starting point for the review: A movie about a team of superheroes is always risky to make, the risk being that perhaps one of the superheroes will get the short end of the stick. Well, I can easily say that each one of the Avengers get their own scenes, their own stories, and their own moments. In other words, thank God for Joss Whedon and his team for coming up with a script in which everyone plays a good part of the story in some way.
Now the actors: Each one of them does a very good job in their role. Samuel L. Jackson, as always, is very good as Nick Fury. Tom Hiddleston really knows how to deliver the bad guy character, especially when it comes to the Norse god of mischief. Jeremy Renner is great as Hawkeye, as is Scarlet Johansson as Black Widow. You can tell that there is something between the two characters. Chris Hemsworth is great as Thor, and Mark Ruffalo proves that he is one of the better actors when portraying Bruce Banner/The Hulk. Chris Evans is great as Captain America, and of course, like I said, Robert Downey Jr brilliantly plays the Iron Man character well. Just seeing someone so noble like Captain America argue with someone really arrogant and cocky like Iron Man is always a pleasure to watch.
As for the action sequences and the special effects: do I really even need to comment on this part? This is the reason why you are seeing this movie (or at least the main reason). You want to see these guys battle it out in awesome battle sequences, which they do. The 3d, believe it or not, is actually pretty good in those sequences, specifically when something blows up and debris is flying everywhere and when Hawkeye's arrows go toward the screen.
All in all, a really great movie. Joss Whedon, we trusted you and you did not let us down, buddy. If you want, I'll get you a beer and we can talk about the sequel (speaking of which, stay after the credits). The Avengers lives up to the excitement, with a script that never loses the heroes compassion, and with great action sequences. A 10/10 for me.