A number of things! I recently got a 3DS for a certain game in particular, so bought a few games to play with it. Primiarily playing
Dream Drop Distance right now, which is what I bought the 3DS for. I'm actually really enjoying playing as Riku, since it's a novelty, though the story hasn't particularly picked up yet. Apart from forced dropping, it's looking pretty good, though.
I'm also playing
Theatrhythm (addictive) occasionally and
Tales of the Abyss when I have enough of DDD. ToA I've been looking for for years, but this is the first time it's been releasedin the EU, since there was no PS2 version for us.
Still, I'm enjoying it and expecting good things.