I try to bring my 3DS with me everywhere. StreetPass is a fantastic feature and seeing the green LED just makes my day. ^_^
As for the games, I haven't been playing too much recently. Actually, let me correct that: I haven't been playing too many 3DS games recently, as Pokemon Black/White and Okamiden are my most played games on the system. 
But yeah, the circle pad works wonders on Okamiden. Wouldn't play it any other way.








