Mario Galaxy 2 looks fucking awesome, and I'm amazed they had the good sense to reuse a great engine for a sequel. Here, I would expect Nintendo's interest in non-games to supersede its tendency to milk Mario. But, milked mustachioed mascot or not, it's obvious Galaxy 2 will be the first or second-best game on the system. I'm tentatively guessing this will be more difficult (pretty please) and even zanier than number one. Yoshi sucked in Sunshine, but I have a feeling they're doing something different with him this time.
Don't know how I feel about Metroid (and I'm a fan of the Prime games! Especially the first one). The obvious CG footage looked like shit; the obvious gameplay footage looked pretty slick, but then I've never liked the Ninja Gaiden games, so I'm apprehensive about it.
New Super Mario Bros. Wii looks OK, I guess. EmCeeGrammar is excited for this and not for Galaxy 2--lulz.
EDIT: The biggest and douchiest ninthings at GAF are somehow massively let down by the Galaxy 2 announcement but floored by New Super Mario Bros. Wii. EmCee, you're in good company.