The new Nikon Coolpix A is garnishing quite a bit of attention. It is a pocket camera with a 16 megapixel APS-C sized sensor (the same exact sensor from the Nikon D7000).
As far as pocket cameras go, you'd be hard pressed to find a better one. Literally, this camera gives DSLR-like quality in a tiny package. If you don't mind a few puzzled looks, you could even use this camera for professional, paying work.
But the flip side of the coin is the price tag. The Coolpix A has an MSRP of $1,100. That is a lot of money for a pocket camera. That is a lot of money for a camera with an APS-C sized sensor. The Nikon D5200 is a better camera for $300 less, but, then again, it won't fit into your pocket.
If you want a pocket camera that really delivers and money is no object, the Coolpix A is a great choice. You may also want to consider the Leica X2 for $900 more. If you are like most people and money is tight, the Canon S100 is still a highly regarded pocket camera and you can find it for less than $400 if you shop around.
Or forget a pocket camera and go for a compact interchangeable-lens camera like the Sony NEX line, Pentax K-01, Samsung NX line, etc.