I also think its funny: I own 10 of these already. I still need to get Xenoblade when I get a chance, though.
I have heard nothing but great things about that one. Tatsunoko not too sure about, as I'm not the biggest fighting game fan and Brawl gives me that fix. I would add Arc Rise Fantasia (if you are into JRPG's) and Fragile Dreams to the list, as well as games like Muramasa, Epic Mickey (despite its flaws its still a great game, especially for Disney fans), Rune Factory Frontier, Super Mario Galaxy, and No More Heroes 1/2. To be honest, there really are a TON of great games on the Wii...so many people looked down on the "little white box that could" when it has a surprisingly deep and wonderful game collection to dig into!