You reminded me that back in BG1 (actually TotSC) I used them in a pretty cool way (BG1 spoiler maybe?).
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In the fight with that demon that was called up by the culties, they helped me win that fight. The demon kept casting hold spells on my different party members. Seeing as my thief (Imoen who was not a mage yet) wasn't much good in the fight itself, I had her roaming the room away from the demon. When another party member got hit with a hold spell (actually, I think it worked for his Death Gaze too), she fired the dispell arrows *at my party member*. Worked like a charm cause Minsc could keep wailing away.