I'm a little late on the Wario Ware talk. If you've never played one of the games, the first one is the best place to start, so good choice there - though I do hope for $30 it was CIB or it's being shipped from another country.
That's the only one where I unlocked everything...to this day, I'm still doing that on Twisted and Touched. I get on a kick where it's all I play, and then I cool off or start playing something else, and then move back to 'em. Great little games that ahead of their time, when you consider the apps of today.