blockbuster [blawk-bus-ter]
noun
1. An aerial bomb containing high explosive, usually weighing several tons, meant for use as a large-scale demolition bomb.
2. A motion picture or novel, especially with lavish production, meant to appeal to a wide audience and/or achieve financial success.
3. Something or something that is forcefully or overwhelmingly impressive, effective, or influential.
EX. So, Marvel had planned to show the first teaser for Age of Ultron during next week's new episode of ABC's Agents of Shield, but it appears that "someone at Hydra" leaked the teaser about a week early. Rather than just wasting resources to try and contain the leak, much to the excitement of Marvel fans everywhere (and probably at the cost of some good cross marketing with Agents of Shield), they decided to release an official trailer.
After seeing the trailer, I can safely say that Age of Ultron is going to be the blockbuster to beat in 2015. I expect it to demolish the competition, break records, and make Disney even more money to put away in their vaults where they store the Disney classics like Snow White and Fox and the Hound.
I wanna end by stating that best part of the trailer, in my opinion, is James Spader's Ultron. I know we all love Hiddleston's Loki, but I think we're excited to see a different kind of villainy.