Cinematic trailer, though I add the caveat of "GOOD" cinematic trailer. I don't get super hyped for anything game related anymore. I will be optimistic, and looking forward to it, but I don't lose my shit and froth at the mouth for games anymore.
That being said, a good cinematic trailer, with good animation, and driving music, will be the one thing that pretty much gets my blood pumping for a short period of time.
The Deus Ex trailers, both Human Revolution, and Mankind Divided are examples of this for me. The level of perfect blend of imagery and music (from a guy that I really love musically, seriously Michael McCann is just awesome), in those trailers definitely gets me psyched. Though, to be fair, I am more psyched for Mankind Divided, because I have the quality of Human Revolution to build my hype off of. I was not as hyped for Human Revolution before it came out. I thought the trailers were very good at trying to establish the tone of the world setting, and they did that brilliantly. But the game itself could've been shit. It wasn't at all in my opinion, and was a game that I loved to death. So seeing the next trailer for Mankind Divided really got my psyched for more the same goodness of HR.
But I'm still patient, and more than happy to wait. I'm not prowling the web, looking for every piece of news about the game that I can find, but I've never been that kind of guy anyway.
Damn, all this talk about Mankind Divided makes me want to go listen to the song again. Seriously, Michael McCann is awesome.