AVENGERS: EARTH'S MIGHTIEST HEROES is pretty much the best superhero cartoon series since Cartoon Network's JUSTICE LEAGUE UNLIMITED; it's incredibly smart with having Christopher Yost as show-runner, who also was behind the surprisingly excellent (and sadly cancelled) WOLVERINE AND THE X-MEN; the character design and voice acting are all equally good.
Be wary; if you haven't seen the entirety of the first season, spoilers will follow.
Where this show really shines though is through character, which always stays very true to the comics, and also is in using the bits and pieces of the existing Marvel Universe mythology and creating great story arcs around them. This particular disc features fallout from the finale of the first season in which Captain America is revealed as a Skrull. For those who aren't uber-fans of comics like myself, the Skrulls are a race of shapeshifting aliens whose own world is gone and they believe they are destined to take control of Earth as their new home. This leads the Skrulls and their Queen to infiltrate the highest places of power and even different criminal organizations, such as AIM and Hydra. Their most valuable asset though is Captain America. He works within The Avengers and SHIELD to fracture them and sow the seeds of distrust but in a very passive and seemingly benevolent way. Soon the question of trust becomes so preeminient on certain characters that they can't trust anyone.
Of the episodes that are on this disc, there are so many excellent ones, such as the cartoon adaptation of the classic Thor storyline, "The Ballad of Beta Ray Bill", where Thor finds out his is not the only being in the universe worthy of wielding the mighty Mjolnir. Also "To Steal an Ant-Man", which introduces us to the Heroes for Hire team of Danny Rand (Iron Fist) and Luke Cage (Power Man). The episode "Michael Korvac" introduces The Guardians of The Galaxy, who are awesome because ROCKET RACCOON. The most powerful episodes though are "Who Can You Trust?", which shows the fracturing of the Avengers from a more personal point of view; "Nightmare in Red", which introduces the Red Hulk battling Hulk through the machinations of a mysterious but well-known villain; and "Prisoner of War", which features Captain America (the real one) teaming up with good guys and bad guys alike to escape their Skrull captors.
The thing that stings the most about this is that this series will soon be over, and there's no good reason for it, other than to capitalize off the success of the AVENGERS feature film. This will lead to Chris Yost being pulled off this show and being replaced with hack extraordinaire Jeph Loeb and to a new cartoon called AVENGERS ASSEMBLE, which will be placed more firmly in the Marvel film universe. But what Marvel and Disney don't seem to get is that the reason this cartoon is so fun and so good is because it isn't in the film universe. We have the live-action films for that. To abandon THESE characterizations in favor of what can only be a cash-grab gives me just another reason to be a little disappointed in the Marvel/Disney partnership.
Although, while each volume of EMH is great in its own right, I'm also hopeful that someday, we will be treated to full-season releases of these episodes at a more reasonable price, and maybe even on Blu-Ray, which apparently Canada has already been treated to...