Trailer/Commercial stuff generally isn't my cup of tea (But c'mon guys no unlce phadey love?) so I don't have a lot of insightful things to say about all the entries even after a few viewings so I'll just summarize my thoughts.
I thought A series of Unfortunate Evas and Dead Island were pretty well put together, but didn't really stand out to me as a whole. Generally good scene selection and good syncing to the original audio sources though.
Ghost in the Shell Human Revolution was really well put together in my mind, but its 5 minute length is really long and despite the good scene selection it feels like it starts to drag a little bit once you hit the 3 minute mark, more of the source's fault then the editors so what can you do.
I thought Fate/ Stay Night - Unlimited Blade Works (Fan Trailer) stood out pretty strong and it had some really good sync and action and was pretty effective in getting me to want to see the full source. However, the font choice and text felt really meh to me, if the text matched the epicness of the rest it'd be pretty close to the top of the list.
My top three choices end up being Subliminal, Japanese People Flacking, and Flying Saucers from Outerspace. Subliminal is fun, well synced, and a great execution in creating an effective parody of the original. Japanese People Flacking has great lip sync and is gut bustingly hilarious, excellent scene selection really compliments the audio source. Flying Saucers from Outerspace just feels so much like a real cheesy trailer for sci-fi stuff and the text choice is excellent.