For turn-based combat, which is my favorite, I really love the combat in Temple of Elemental Evil and also that in Shadowrun Returns and X-com: Enenmy Unknown.
Only action RPG I've played that I really like is The Witcher 2.
For RTwP: I'd pick Dragon Age: Origins. Had some serious balance issues, but I liked the various spells and combat skills in the game a lot.
