I agree with Kevadu's list. If you are worried about the BG1 engine, I think there are mods around that can either put Baldurs gate 1 into the second games engine or join the two together and play them as one. You need both games for either to work though. I think they are called Trinity and Tutu.
I really liked Planescape Torment but it should be mentioned that the combat is not that fun but the writing is great.
I love Icewind Dale but it suffers from the exact opposite problem. It focuses on the gameplay but lets the story take a backseat for the most part.
Divine Divinity is like a Diablo clone with humour. I don't like comparing it to Diablo but that is probably the easiest wat to describe its gameplay.
The Elder Scrolls are fun games. Morrowind is my favourite but the later two installments are probably a lot easier to get into these days.
I never got to far into it but I know Mesh really likes Gothic
Although his favourite game is TES II Daggerfall <3
Then there are games like The Witcher, Simon the Sorceror, Septerra Core and King of Dragon Pass.