Segway Advanced Personal Robot
This is one of the coolest things I've seen coming this year shown at CES 2016. Its an advanced hoverboard, that can transform to a robot you can remote control, or advanced robot with additions. I'm particularly interested in the sentry mode, and the follow mode - like having it carry my camera / video gear while I walk.
Pre-orders for the base module coming in a few months on Amazon, no word on when the advanced stuff will be ready nor the pricing.
Best New Window Washing Robot CES 2015

Its a lightweight robot that clings to windows, tables, etc and vacuums, and wipes them clean. It brushes away particles, does not use a driving wheel (which can leave marks), features a remote control so you can direct it where to go.
For glass, rough glass, tile, walls, floors and tables. Video after the break.
Droplet is a Water Cannon for Your Plants
I wish this robotic water cannon came out early in the summer when I needed it to water two different gardens in two different properties in the blistering heat.
The Droplets sprinkler is the world's first programmable hose end sprinter system that is smartly connected to over 10,000 weather stations with real-time data, as well as comprehensive database that includes the biological plant information and US soil samples to make better recommendations on how much watering is appropriate.
The company claims that it uses up to 90% less water than a standard sprinkler-- a figure that does seem believable given that a lot of the speakers that I see in a neighborhood tend to sprinkle the water onto the sidewalk just as much as the grass.
Still, at $300 it seems a bit steep. I'd buy a few if they were hundred dollars piece. If I get my hands on one, I'll definitely let you know what I think.
Parrot AR Drone Mini and Sumo @ CES
No official pricing or release date yet. Expect both to be announced sometime this year.
AR Drone 2 does have a number of upgrades, including a GPS tracking module, and an upgraded battery pack.
Double Robotics Offers Wheels for iPad @ CES
Saw these guys for the first time - they're based out of Sunnyvale. For $2000, and your iPad 2/3, you can have your very own remote telepresence robot to be there, without really being there.
One will run you about $1999 right now, before the price goes up when finally released. All things considered, that's actually fairly priced.
Too bad there is no charging dock right now, nor is there an automated patrol type setup. SDK and APIs are available for developers to add those features.
Would This Be Considered Breaking and Entering? iRobot 110 Surveillance Robot
The Rover is a toy. This is serious surveillance. Now if only it could figure out how to open up doors... What if they threw it in a room with no way to roll out?