The Star Wars: The Old Republic Walkthrough on IGN is a multi-part video presentation on BioWare's upcoming MMORPG. Here's an explanation from our narrator, Dallas Dickinson, captain of the Nostromo, and senior content producer on the game:

Now we've been talking a lot lately about the fact that this is the first ever fully-voiced MMO, but we wanted to show that to you in action. So, we're going to give you a quick preview of Star Wars: The Old Republic; the cinematic conversation system, as well as some of the action-packed Star Wars combat that you'll get to experience when you play the game. We're going to show you a few things here, but remember this is a work-in-progress. You're going to get to see a couple of character classes, a few of our planets, and then a flashpoint in the game.