8. Mass Effect 3 - Battle For Earth
http://www.youtube.com/watch?v=FW8WNCtU17Q In the furore over Mass Effect 3's ending, it's easy to forget that the game was crammed full of incredible moments. The climactic 'Battle for Earth' cutscene was an epic culmination towards what players had worked towards over the course of three games.
7. Final Fantasy X - The Sending
http://www.youtube.com/watch?v=-0JXmYyILyU It's hard to pick the best cut scene from a game filled with great (and some not-so-great) sequences, but Yuna's sending after Sin destroys an entire village that gives the greatest emotional impact. Stunningly beautiful, it also manages to immediately give both Tidus and the player an indication of Yuna's importance in this strange world.