The Witcher is a terrific game. When I heard about the "enhanced version" patch, I decided to stop playing it and wait for that to come out. I have a feeling it will force me to start my game over, so I'm just going to wait.
It's kind of like a cross between Neverwinter Nights 2 and Diablo with a little Oblivion sprinkled in for the spell creation parts. It's a good game and well worth the money.