I got my Vita back and am playing:
Monster Hunter Freedom Unite-First off,this is so much more comfortable to play with a second analog stick! I am switching between the sword n shield, the greatsword, and light bowgun, and I really am starting to enjoy using the bowgun more. It takes a bit of maintenance and care, but I am finding I like ranged combat in games a lot more than I thought.
Terraria-I now am a fan of the game. I was able to get more into it on PS3, and played a lot then, but adding portability just makes it that much better. Hopefully the developers will release that patch i've been hearing about before I run out of content, which will probably be a long,long time from now.(that patch that is already on PC, but hasn't reached consoles or the Vita yet). I've started over with the new platform, and have already built a fortress for myself as a base and place to store my crafting tools, have a good amount of all the basic ores, and have mined almost as deep as on my PS3 account, but in a much more strategic and organized manner.
Persona 4 Golden-I'm liking this game so far. I started then stopped playing this game last time, due to my unwarranted bias that it wasn't enough like persona 3. Now, i'm playing it fresh and open minded, as only the overall style is greatly different so far.
Cladun:This is an RPG-This is a pretty cool indie title. It doesn't take itself seriously and is still solid on all fronts.