1) So I had to go diving back into the interviews. Citations from actual Obsidian sources or it's just fan-fiction wanking. ::sigh:: This was part of an interview that TPIOM did with Chris Avellone.
(Read the whole thing here. Or if you prefer, read the same interview on Avellone's own old blog at Obsidian's site.)
2) The exact quote that every one likes to reference but few actually have heard from Bao-Dur was the line "Make my sacrifice matter." It wasn't and isn't in the game. (Look all you want for it on the discs.)
It was - however - on a sound file that was on the original official KOTOR2 site. The file had sound clips from a wide range of the voice actors including Roger G. Smith (the voice actor for Bao-Dur). Music from the game was behind each and every line - rendering the Bao-Dur sample unusable in TSLRCM or any other mod.
Obviously, that official KOTOR2 site is long gone. But here's the sound file if you'll only stop talking about it.
Bao-Dur - Make My Sacrifice Matter (with music).mp3