I saw this trailer before Underworld. Historically, video game movies are the worst. But the Resident Evil movies have been an exception. Alice, the main character of the movies, continues to survive the outbreak of the T-Virus, zombies, zombie animals, clones, and of course The Umbrella Corporation.
I have really enjoyed the previous movies. They had fun action and zombies. They have a decent enough plot. They are pure popcorn movies. I hope number 5 is a fun as the previous 4 movies.