The Canon s90.

- Best low light performance you can find on a pocketable camera by a decent margin.
- Related, the lens goes to F2.0!
- A larger than typical sensor - I think it's the largest sensor you can get in a pocketable camera
- Did I mention it fits in your pocket? lol
- Full manual control (and RAW)

It's only big drawback vs similar cameras is that it's auto mode often seems to choose to low of a shutter speed in bad lighting. But if you use shutter priority mode, it's the best pocketable camera for low light that you can currently get.