I've been unable to locate this, but does anyone know who does the voice of Haer'Dalis?

And since we're on the subject of voices, are they any IWD 2 sets that have been made for the BG saga?

I do not understand the second question. Are you asking if you can use an IWD2 soundset for your BG/BG2 character?

I guess. I tried bringing them directly over from my IWD 2 folder, but that didn't work.

What you might need is the Infinity Sound Converter. I think it should work. I know it works for the BG games... You can go in and individually convert the character sounds into WAV format, then save them under either that name or another name for a custom soundset. Go here:
http://www.teambg.net/?page=tools/othertools

Haer'Dalis' voice was done by Michael Bell. He's one of the few voice actors who doesn't do lots of other voices in the game. (You might also recognize him as the merchant who boasts "you'll find no lower prices in Amn, I'll guarantee it." He voiced Plastic Man on the old cartoon of the same name, and provided many of the voices on the original Smurfs cartoon, including Grouchy Smurf, Handy Smurf, Lazy Smurf, and Johan. He's also the voice of Drew and Chaz on Nickelodeon's cartoon hit "Rugrats", Larrel in Icewind Dale, and in a rare turn in acting, was Groppler Zorn in the Star Trek: the Next Generation pilot episode.

Yeah, I know who Michael Bell is: the voice behind Raziel :D

I thought it might have been him, I wanted to be certain. Thanks guys.

Man, that's awesome trivia to know for around the AD&D dinner table, cheers Pirengle!
Incidentally, I recall reading a thread where you contributed a whole heap of names/voices from Bg2 awhile back, was going to link it here now, just couldn't remember what it was called. :D Twas cool.

I remember vividly watching Plastic man as a kid. hehe.

Ooh gee, I think I'll be going back to Bg2 - my addiction has meant that I've got a spurt on now. Up to Spellhold already and its only been barely two weeks. (which is rather fast compared to my usual meticularity)...