Even though I'm not much of a fan of 4, Crash Bandicoot games tends to scratch my itch well when it comes to platformers. It has the right amount of balance to make me replay it again and again on different systems.
Aside from that, The King of Fighters series always has been the most fun fighting game series out there. It generally feels smooth and even though I'm not a fan of all of the games (like XIII and XII), it has that pick up and play feeling that even something like Street Fighter or Tekken doesn't have for me personally.