I've recently finished playing Super Mario World with my brother. I play through that game once every two years or so. I may also play through SMB or SMB3 on regular intervals that must be counted in years. While I do play SMB2, I find myself bored with that game more easily.
Mega Man 2-5 are regularly visited, with 3 the most frequent. At least one game, each year. I might play one of the X games, but they aren't quite as fun to me as the original blue bomber.
Beyond that, I seem to boot up Skyrim on a bimonthly basis, and twice a year I make an absurdly powerful Morrowind character, make it halfway through the mages guild before losing interest.
For some reason I keep playing The Sims 3. I really don't know why.
I tried a little Vampire: The Masquerade last month. I don't think the world design holds up very well, but I'd love to see a modern game with a bigger, more open world.
Sadly, for this topic anyway, what I'm playing right now are relatively recent releases. I'm in the middle of Batman, the end of Scholar of the First Sin, and the beginning of Witcher 3, which I've been putting off for a while now. I'm also gonna go back to Bloodborne and will play an occasional match of MKX, usually login just to do the premier tower.