Icewind Dale games are more combat-focused than quest-focused like BG. As for PC games you need to play:
(snip)
Some objections:
Skip Neverwinter Nights' main campaign. It's boring and takes forever. Just read a synopsis, then jump into expansions.
Neverwinter Nights 2's main campaign is slow to start and quite forgettable, so I suggest you read a synopsis here as well and jump straight into Mask of the Betrayer.
Septerra Core has boooring combat and way too much of it.
Little Big Adventure controls horribly.
Watch Supergreatfriend's LP of Realms of the Haunting instead of playing it yourself.
Don't maul me, Rumbro.

Adding:
Thief series (2>1, 3 optional, reboot maybe?)
Gothic (2>1, 3 is a mess and optional, 4 is a sham)
Knights of the Old Republic 2 (only with fan patch)
Doom/s (including 3, which is a fine game)
FTL
Fallout (F2 optional, because bloated and meandering)
Quake (main quest, then Arcane Dimensions fan map pack)
Grim Fandango (remaster)
Sid Meier's Pirates! (the most recent version)
Full Throttle (remaster; very short, start with this maybe?)
Crysis (until it goes linear)
STALKER Shadow of Chernobyl (and/or Call of Pripyat)
MDK