I originally sold my Wii about 1-2 years into its life cycle because I was unhappy with it... however I got my Wii U on Sunday and I'm very happy with it so far. One thing that has been awesome is playing some of the Wii games I've missed like SSB Brawl and Wii Sports Resort. I plan on checking out some of the JRPGs and Nintendo 1st party exclusives I missed too. I wish they would upscale the Wii games though. Switching from Wii U mode to Wii mode gets all fuzzy. I'd rater have sharp jaggies then SD fuzzies.
Last Story Zelda SS Kirby Collection Animal Crossing Xenoblade Chronicles (even though I really didn't like the combat) Trauma Center
Mario Kart and Smash Bros are guaranteed to be right around the corner for the WiiU so keeping those seems a bit silly, especially since Nintendo confirmed that Smash Bros is in development for it.
60°
50°
250°
220°
Ad 
50°
10°
10°
10°
10°
20°
Because people that HAVE the game don't need to be told if it's worth keeping; they can figure that one out on their own.
My list is
Last Story
Zelda SS
Kirby Collection
Animal Crossing
Xenoblade Chronicles (even though I really didn't like the combat)
Trauma Center
Mario Kart and Smash Bros are guaranteed to be right around the corner for the WiiU so keeping those seems a bit silly, especially since Nintendo confirmed that Smash Bros is in development for it.