I loved the teaser! I was going 'Man, they usually put the crappy movie commercials at the beginning, what's up with this after the trailers have already started?' Though at least once or twice, they've run commercials after the trailers.
Then I see the 'Umbrella Corporation' symbol and I burst out laughing. I couldn't help myself; it was wonderful.
I really liked the first movie a great deal, much more so than I thought I would. From the trailer it looks like they might be picking up where the last one left off. Having never played the games, I have no idea, though.