(Detail: having that dude reprise his role as the voice of Optimus Prime was also a great call; however, it also really made me miss Starscream's voice actor. "Mighty Megatron!" Hee.)
* Crap, I lost my scrap of paper listing all the trailers we saw. The only ones I remember were the Simpsons trailer, which I remember because tze bebe has been singing the Spider-pig song ever since, and the mysterious new J.J. Abrams 1-18-08 trailer, which I am all over.