Prime 2: IMO the best Metroid game. Awesome difficulty, sweet bosses, neat atmosphere that is truly unique in the Metroid universe. And overall just the coolest stuff: Annihilator beam, light suit, etc.
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Wind Waker: I loved sailing, and the world just felt so open and alive. Best hub town in the series as well as some of the most beautiful graphics I've ever seen. Music was dope.
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Super Mario Galaxy: This game just felt so damn fresh. I was blown away by every level in this game. Graphically it was stunning, gameplay wise it was flawless, and the innovation in every level was just wow. I actually liked galaxy 2 a bit more, but galaxy at the time was just orgasmic.
Honorable Mention: Pikmin 3







