I brought my SNESC to the in-laws for Thanksgiving and it was a huge success! We played a bunch of Final Fight 3, Contra III, TMNT:TiT, and Super Mario World. We even played some epic Winner-Stays-On Dr.Mario (the updated one with the Tetris double-pack).
Greatness: Easy to pack, plug n play, easy to navigate the menu even for my 5 yo niece.
Not so great: short stock controller wires, no 4-player Super Bomberman.
For me Thanksgiving week justified my purchase of this thing. Normally I would pack my original console + upscaler, flash cart, and a bunch of controllers (and multi-tap), cables etc., haul it over to my familys place, spend a little bit of time setting it up, having to be on-call for locating and switching games on the cart for them, as well as checking in on it periodically to ease my mind that the nieces didnt ruin my collectible.
But the classic made things a hellava lot easier to break out some classic snes games in a big social setting.