I have so many great memories, so I'm just going to give a small selection...
Getting my Wii on UK launch day, setting it up and just messing around with Wii Sports for a few hours with my family, most of whom had never touched a video game before, as well as the many other times on top of that first day with later games like Mario Kart Wii and Wii Sports Resort.
The sheer joy I experienced playing through the two Mario Galaxy games.
The return of 2D Mario and DKC on home consoles for the first time since the mid 90's.
Skyward Sword finally delivering on something I had expected many to attempt, when few did in reality.
Epic Mickey stands alone as the only game from this generation that I was totally invested in on an emotional level. It was a true roller-coaster of emotions, despite the games mechanical flaws.