Who doesn't love Duck Hunt? It's a great NES title that used the Nintendo Zapper accessory to simulate a good day out hunting ducks with your dog. Heck, even PETA doesn't have any problem with Duck Hunt.
Duck Hunt was originally released in Japan on April 21st, 1984, and stands as one of the most well known games of the NES (aside from Super Mario Bros.). The reason for the game's success was due to the game coming on the dual-game Super Mario Bros./Duck Hunt cartridge that came with all consoles bundled with the Nintendo Zapper.
While the laughing dog has a love-hate relationship going on with most Duck Hunt players, I imagine many players would have loved to see this game make a comeback on the NES Classic Edition. Unfortunately, the plug and play console doesn't support the Zapper, so I guess it's a lost hope.