Terran:
Medic
Firebat
Vulture
Goliath
Wraith
(Dropship? I don't think they have a special voice for this, so dw if you can't find it).
Protoss:
Scout
Corsair (I believe it's hidden in the sound files, there's no unit for it though)
You don't have to include the sounds of the units being attacked.
I'm trying to make a Korean soundpack for BW, like the japanese sound pack here: http://www.teamliquid.net/forum/viewmessage.php?topic_id=67359. BW was never released with korean dubbing though, so i'm trying to make one.