What a pleasant surprise.  I put Ultimate Avengers in our Netflix queue earlier this week, and received both Ultimate Avengers: The Movie and Ultimate Avengers 2: Rise of the Black Panther on the same Blu-ray disc. A pleasant surprise, indeed. Since both movies were relatively short, Josh and I watched both this evening. These are both direct-to-DVD releases from 2006 with origination storylines for the formation of the Marvel Avengers team. While they were released separately, I would treat both movies as one film.  They go together, the “sequel” directly follows the first film, and the actual alien invasion from the first film is not resolved until the sequel.
 

Ultimate Avengers: The Movie (2006)

Ultimate Avengers: The Movie (2006)

Ultimate Avengers 2: Rise of the Panther (2006)

Ultimate Avengers 2: Rise of the Panther (2006)

The films were okay for direct-to-DVD, as the action and voice acting were pretty decent. There was a lot more arguing and dissension within the team. I suppose this bickering was more true to the original comics, but it was a little unexpected.