yeah the dead island trailer was done quite well, emotionally made. to bad the game sucks balls.
other trailer i liked were the extended deus ex human revolution one cause of soundtrack lol and i also like soem of the mass effect trailers, me trilogy trailer me3mp trailers etc.
and the fallout 3 trailer were interestingly done.
http://www.youtube.com/watch?v=iYZpR51XgW0
than again im a bias man.