i would definately go for VtM:B. such an original and innovative game, funny, beautiful, challanging, a true decision making game with good action to boot.
also there are many Turn Based Strategy/RPG games that are very fun.
Heroes of Might and Magic series is the obvious choice, but others like Age of Wonders 2 and the more recent Fantasy Wars which i loved (reminded me of Warhammer: Shadow of the Horned Rat but turn based).
for your hardcore RPG go Might and Magic 6 or 7 (one word of caution: MM6 is pre-3DFX!)
and of course KOTOR, BG2 anything Bioware.
RTSs and FPSs may sell well, but RPGs change your life.