YES, Icewind Dale is great! It is different from the BG games in a few ways.
First off, the storyline is linear and you don't do alot of side quests.
Secondly, you roll up all of your pc's and no npc's join your party.
I have only just bought HoW and haven't played it but I hear it is pretty good.
Do try IWD! It's the reason I got BG2 in the first place! LOVE IWD! Lots of good dungeon crawls and the story is interesting. Moves much faster than BG1 or BG2, though. Still I'm playing it a second time now and liking it all over again, so it has a bit of replay value.
Cloudbringer
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Raindancer of the Laughing Hyenas Clan
Storm-Queen
StormCloud of the Black Knight
Heart Mind Soul Forever