Morrowind, Skyrim, and definitely Fallout3 /NV. I think these open world exploration type games will work great. Atleast I really hope so. Just hanging out in a tavern in Skyrim or some hole in the wall in Fallout seems like it’ll be fun.
Haven’t played Metro but I think it’s one of those games I will probably play if the VR experience is great. I heard it’s a pretty tense game.