Pushmo is the best game on the eShop. Gunman Clive is good too, and cheap. Liberation Maiden is fun if you like silly Japanese stuff but really short. Crimson Shroud is good if you like pen and paper RPGs. Sakura Samurai is a neat game too.
This. It's also worth pointing out that there's really very little else in the eShop (not counting maybe five VC titles) worth looking at beyond these. --- "And you see where that can lead you, into what mistakes and absurdities, when you are dealing with a man like Arsene Lupin."
Fractured Soul will be on sale for $8 in a few weeks, I'd give the demo a try and see how you enjoy it.
The 2nd best platformer right now in my opinion (first being Shinobi). --- My wonderful girlfriend is a smexy Bunuppy! A cross breed of a bunny and a puppy .. WHAT! O_O http://i.imgur.com/nddzs.jpg <- My name in a game (MSFHD)! :D
Any of the mario land games on the 3ds eshop are awsome. I have all 3 and are very fun and worth getting. --- My 5 Favortive Games of all time are 1) Sonic Adventure 2 Battle. 2) Phantasy Star Online EP 1&2. 3) Star Ocean Till The End Of Time. 4) MGS 2 PS2. 5) FF 9