Fantasy RPG as it should be
The best things I like in this game:
1) story - complex, immersive, everchanging depending on your decisions, many twists
2) characters - nicely and believable made personalities, great voiceovers
3) music (my best ones are Lake Calenhad ambient music and Ostagar ambient music)
Things that dissapointed me a little:
1) game engine - though one of the best for PC RPG, it has some glitches I don't like - for example, sometimes, when I needed it most, I was unable to switch between izometric and 3D view, then, quite often, in 3D view I was unable to point and click my cursor for movement on some places though they were reachable, etc
2) some needless and pointless brutality at specific stages of the game (due to spoiler matters I won't describe them here)
3) bugs - I have 1.02a patch installed and yet there are still some unresolved bugs
For any fantasy RPG lover this is, in my opinion, one of the best choices (definitely for those who played and loved Baldur's Gate series).