every Guild Wars: Prophecies cut scene edited together (1 hour, 22 minutes, 44 seconds) Meet humans and charr, playable races in Guild Wars 2.
The little girl at the beginning is Gwen, she won't be seen again until the Eye of the North and until that expansion was released no one knew whether she lived or died when the charr attacked.
The Trials of Ascension can be done in any order, this video collection shows just one order. There are two cut scenes with Glint. The first comes from completing the mission. The second is only seen if you attempt and fail at the bonus, which is to kill Glint. Even if you do kill Glint to get the bonus, the story assumes you did not.
every Guild Wars: Eye of the North cut scene (49 minutes) Video quality is better in game than on this compilation.
Meet the asura and norn playable races in Guild Wars 2.
Eye of the North allows the player to choose what order to play out the story, so this video just shows one way to order things.
I have not found similar videos for Factions or Nightfall.