Gothic series, Drakensang, Risen, Arx Fatalis, Neverwinter Nights, Mass Effect, Fallout, Morrowind/Oblivion, Vampire: The Masquerade, KOTOR, Divine Divinity series, Kingdoms of Amalur....
some are old games but personally I don't care because they are still amazing compared to the lack of ideas found in the RPG genre in the last few years.