See more below.
Hotrod,
Running around is the most boring part, but it will become worth it soon enough, because that's how you get from one pocket of enemies to the next.
[spoiler]
The latest I saw was that he's on the Ebon Hawk with T3, but he's badly damaged and that you spend practically the entire game repairing him and gradually he tells you what happened during the time after KotOR.
[/spoiler]