Update: Videos have been taken down by Capcom. Here's a picture of Galactus being a douche bag instead. Less than two weeks until release, suck it up!
Another day, more leaked Marvel vs. Capcom 3 information. Up today are the full intro cinematic and spoilerrific boss battle. If you plan on being surprised at MvC3's final battle, avoid at all costs. Though I'm sure that if you keep up gaming news on the interwebz, this won't be much of a surprise.
The boss battle can be found here. Do not click if you hate spoilers. This is your final warning.