Animal Crossing: City Folk (& DS Flash Card).
My friend just linked me this: Animal Crossing Wii goes MMO
FUCK. I'm excited, yet extremely scared at the same time. I played the Game Cube version and was instantly in love. The DS version made matters worse. I would make sure I wouldn't miss a day so I could tend to my flowers and gardening, sending letters to townsfolk, buying items from Tom Nook, and every Saturday I was able to get another song from the awesomeness known as K.K. Slider. Oh god, this game is going to eat up my life. I already know.
The article also mentions the DS Flash Card to be able to get Nintendo Gameboy & Gameboy Color games. O_O