I remember the trailers for the PS3/360 generation games particularly well since they came out at a time where I was started to become a lot more active on the internet, DB-wise. I think the so-called 'Android Saga' trailer for Ultimate Tenkaichi is up there as one of the most memorable for me. The combination of the new animation and the music got me really hyped up for a game that didn't really warrant all of that excitement.
https://www.youtube.com/watch?v=1kWe0tdwtY0
I'm also quite fond of all of the Raging Blast trailers. I think 2009 was the first time I was actively keeping up with all of the pre-release news relating to the annual DBZ fighting game. A YouTube channel called 'WolfClawStudios' was my main source of news back then. I specifically remember downloading the demo and the trailer for the game off of the Playstation Network too. Pretty sure this was the exact one that I downloaded: https://www.youtube.com/watch?v=H1eyFB6igrQ
