(In no certain order)
- Baldur's Gate
- Baldur's Gate II: Shadows of Amn
- Neverwinter Nights
- Star Wars: Knights of the Old Republic
- Star Wars: The Old Republic
- Jade Empire
- Mass Effect
- Mass Effect 2
- Mass Effect 3
- MDK2
- Dragon Age Origins
- Dragon Age II
- Dragon Age: Inquisition
And I would argue Obsidian was the better studio anyway. Besides NWN2, and moreso its fantastic expansion, Mask of the Betrayer, they also made the excellent Knights of the Old Republic 2, Fallout: New Vegas, and their own original franchises, Pillars of Eternity 1 and 2, and Tyranny.
Obsidian and Bioware both had a working relationship with Black Isle Studios.
Love them all, they did some great stuff.