It took him seven years, but yesterday, game designer Drew Rechner finally released Baldur's Gate: Reloaded, a ridiculous mod that puts the entirety of BioWare's classic RPG—including the expansion, Tales of the Sword Coast—into Neverwinter Nights 2.
To play the mod, you'll need a copy of Neverwinter Nights 2 and its expansions Mask of the Betrayer and Storm of Zehir (which you can get as one big package on GOG). Then you can download and install the mod for free right here.
I'm still kind of stunned that this exists, and I'm strongly considering re-buying NWN2 just to check it out. Rechner, who says the bulk of work on this mod was done by him and a programmer, Shallina, tells me this project helped him get into the game industry. He worked at TimeGate Studios (Section 8) until recently, and he was let go just before they shut down.
Baldur's Gate. In 3D! Amazing.