yeah i would say the witcher is a must play. if you can get your hands on a uncensored version i would reccomend that
After trying the demo, I must say there were definitely some interesting features, but I just can't get past the fighting, which is uber-boring for me. I know games like Oblivion or Dark Messiah can turn into button mashing at times, but it's way more intuitive and exciting for me, unlike the Witcher's system that pretty much only relies on timing.