My wife doesn't really play that much older stuff anymore, but she grew up with SNES and such so she has an appreciation for the older games.
She still plays the 3DS and PSP a lot, and we'll normally play through RPGs together. Right now we're doing Wind Waker HD which looks pretty amazing. That said, there have been discussions about me reducing the size of my collection if we want to have a second kid which makes me go oh noes!