which games this generation will be considered classics in the future?

[Esmoreit]

I think there are two possible benchmarks for what is considered "classic".

One is the type of classic you'd find ten years in the future on a show called "I love the 00's". What we will find here is indeed Nintendogs, Wii-series, Halo 3 (due to promotion), braintraining and GTA.

Then we have the "Fan-classic". Any game that will fondly be remembered on messageboards like these. Portal/Orange box is a major one, CoD4 is, Gears is, Mario Galaxy, you can fill in the rest.